Filesystem

Base.Filesystem.pwd — Function

  1. pwd() -> AbstractString

Get the current working directory.

See also: cd, tempdir.

Examples

  1. julia> pwd()
  2. "/home/JuliaUser"
  4. julia> cd("/home/JuliaUser/Projects/julia")
  6. julia> pwd()
  7. "/home/JuliaUser/Projects/julia"

source

Base.Filesystem.cd — Method

  1. cd(dir::AbstractString=homedir())

Set the current working directory.

See also: pwd, mkdir, mkpath, mktempdir.

Examples

  1. julia> cd("/home/JuliaUser/Projects/julia")
  3. julia> pwd()
  4. "/home/JuliaUser/Projects/julia"
  6. julia> cd()
  8. julia> pwd()
  9. "/home/JuliaUser"

source

Base.Filesystem.cd — Method

  1. cd(f::Function, dir::AbstractString=homedir())

Temporarily change the current working directory to dir, apply function f and finally return to the original directory.

Examples

  1. julia> pwd()
  2. "/home/JuliaUser"
  4. julia> cd(readdir, "/home/JuliaUser/Projects/julia")
  5. 34-element Array{String,1}:
  6.  ".circleci"
  7.  ".freebsdci.sh"
  8.  ".git"
  9.  ".gitattributes"
  10.  ".github"
  11.  ⋮
  12.  "test"
  13.  "ui"
  14.  "usr"
  15.  "usr-staging"
  17. julia> pwd()
  18. "/home/JuliaUser"

source

Base.Filesystem.readdir — Function

  1. readdir(dir::AbstractString=pwd();
  2.     join::Bool = false,
  3.     sort::Bool = true,
  4. ) -> Vector{String}

Return the names in the directory dir or the current working directory if not given. When join is false, readdir returns just the names in the directory as is; when join is true, it returns joinpath(dir, name) for each name so that the returned strings are full paths. If you want to get absolute paths back, call readdir with an absolute directory path and join set to true.

By default, readdir sorts the list of names it returns. If you want to skip sorting the names and get them in the order that the file system lists them, you can use readdir(dir, sort=false) to opt out of sorting.

Julia 1.4

The join and sort keyword arguments require at least Julia 1.4.

Examples

  1. julia> cd("/home/JuliaUser/dev/julia")
  3. julia> readdir()
  4. 30-element Array{String,1}:
  5.  ".appveyor.yml"
  6.  ".git"
  7.  ".gitattributes"
  8.  ⋮
  9.  "ui"
  10.  "usr"
  11.  "usr-staging"
  13. julia> readdir(join=true)
  14. 30-element Array{String,1}:
  15.  "/home/JuliaUser/dev/julia/.appveyor.yml"
  16.  "/home/JuliaUser/dev/julia/.git"
  17.  "/home/JuliaUser/dev/julia/.gitattributes"
  18.  ⋮
  19.  "/home/JuliaUser/dev/julia/ui"
  20.  "/home/JuliaUser/dev/julia/usr"
  21.  "/home/JuliaUser/dev/julia/usr-staging"
  23. julia> readdir("base")
  24. 145-element Array{String,1}:
  25.  ".gitignore"
  26.  "Base.jl"
  27.  "Enums.jl"
  28.  ⋮
  29.  "version_git.sh"
  30.  "views.jl"
  31.  "weakkeydict.jl"
  33. julia> readdir("base", join=true)
  34. 145-element Array{String,1}:
  35.  "base/.gitignore"
  36.  "base/Base.jl"
  37.  "base/Enums.jl"
  38.  ⋮
  39.  "base/version_git.sh"
  40.  "base/views.jl"
  41.  "base/weakkeydict.jl"

julia> readdir(abspath(“base”), join=true) 145-element Array{String,1}: “/home/JuliaUser/dev/julia/base/.gitignore” “/home/JuliaUser/dev/julia/base/Base.jl” “/home/JuliaUser/dev/julia/base/Enums.jl” ⋮ “/home/JuliaUser/dev/julia/base/version_git.sh” “/home/JuliaUser/dev/julia/base/views.jl” “/home/JuliaUser/dev/julia/base/weakkeydict.jl”

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L784-L857)
  4. [Base.Filesystem.walkdir](#Base.Filesystem.walkdir) — Function

walkdir(dir; topdown=true, follow_symlinks=false, onerror=throw)

  2. Return an iterator that walks the directory tree of a directory. The iterator returns a tuple containing `(rootpath, dirs, files)`. The directory tree can be traversed top-down or bottom-up. If `walkdir` or `stat` encounters a `IOError` it will rethrow the error by default. A custom error handling function can be provided through `onerror` keyword argument. `onerror` is called with a `IOError` as argument.
  4. **Examples**

for (root, dirs, files) in walkdir(“.”) println(“Directories in $root”) for dir in dirs println(joinpath(root, dir)) # path to directories end println(“Files in $root”) for file in files println(joinpath(root, file)) # path to files end end

julia> mkpath(“my/test/dir”);

julia> itr = walkdir(“my”);

julia> (root, dirs, files) = first(itr) (“my”, [“test”], String[])

julia> (root, dirs, files) = first(itr) (“my/test”, [“dir”], String[])

julia> (root, dirs, files) = first(itr) (“my/test/dir”, String[], String[])

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L889-L927)
  4. [Base.Filesystem.mkdir](#Base.Filesystem.mkdir) — Function

mkdir(path::AbstractString; mode::Unsigned = 0o777)

  2. Make a new directory with name `path` and permissions `mode`. `mode` defaults to `0o777`, modified by the current file creation mask. This function never creates more than one directory. If the directory already exists, or some intermediate directories do not exist, this function throws an error. See [mkpath](#Base.Filesystem.mkpath) for a function which creates all required intermediate directories. Return `path`.
  4. **Examples**

julia> mkdir(“testingdir”) “testingdir”

julia> cd(“testingdir”)

julia> pwd() “/home/JuliaUser/testingdir”

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L156-L176)
  4. [Base.Filesystem.mkpath](#Base.Filesystem.mkpath) — Function

mkpath(path::AbstractString; mode::Unsigned = 0o777)

  2. Create all intermediate directories in the `path` as required. Directories are created with the permissions `mode` which defaults to `0o777` and is modified by the current file creation mask. Unlike [mkdir](#Base.Filesystem.mkdir), `mkpath` does not error if `path` (or parts of it) already exists. However, an error will be thrown if `path` (or parts of it) points to an existing file. Return `path`.
  4. If `path` includes a filename you will probably want to use `mkpath(dirname(path))` to avoid creating a directory using the filename.
  6. **Examples**

julia> cd(mktempdir())

julia> mkpath(“my/test/dir”) # creates three directories “my/test/dir”

julia> readdir() 1-element Array{String,1}: “my”

julia> cd(“my”)

julia> readdir() 1-element Array{String,1}: “test”

julia> readdir(“test”) 1-element Array{String,1}: “dir”

julia> mkpath(“intermediate_dir/actually_a_directory.txt”) # creates two directories “intermediate_dir/actually_a_directory.txt”

julia> isdir(“intermediate_dir/actually_a_directory.txt”) true

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L194-L234)
  4. [Base.Filesystem.hardlink](#Base.Filesystem.hardlink) — Function

hardlink(src::AbstractString, dst::AbstractString)

  2. Creates a hard link to an existing source file `src` with the name `dst`. The destination, `dst`, must not exist.
  4. See also: [symlink](#Base.Filesystem.symlink).
  6. Julia 1.8
  8. This method was added in Julia 1.8.
  10. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1015-L1025)
  12. [Base.Filesystem.symlink](#Base.Filesystem.symlink) — Function

symlink(target::AbstractString, link::AbstractString; dir_target = false)

  2. Creates a symbolic link to `target` with the name `link`.
  4. On Windows, symlinks must be explicitly declared as referring to a directory or not. If `target` already exists, by default the type of `link` will be auto- detected, however if `target` does not exist, this function defaults to creating a file symlink unless `dir_target` is set to `true`. Note that if the user sets `dir_target` but `target` exists and is a file, a directory symlink will still be created, but dereferencing the symlink will fail, just as if the user creates a file symlink (by calling `symlink()` with `dir_target` set to `false` before the directory is created) and tries to dereference it to a directory.
  6. Additionally, there are two methods of making a link on Windows; symbolic links and junction points. Junction points are slightly more efficient, but do not support relative paths, so if a relative directory symlink is requested (as denoted by `isabspath(target)` returning `false`) a symlink will be used, else a junction point will be used. Best practice for creating symlinks on Windows is to create them only after the files/directories they reference are already created.
  8. See also: [hardlink](#Base.Filesystem.hardlink).
  10. Note
  12. This function raises an error under operating systems that do not support soft symbolic links, such as Windows XP.
  14. Julia 1.6
  16. The `dir_target` keyword argument was added in Julia 1.6. Prior to this, symlinks to nonexistant paths on windows would always be file symlinks, and relative symlinks to directories were not supported.
  18. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1035-L1067)
  20. [Base.Filesystem.readlink](#Base.Filesystem.readlink) — Function

readlink(path::AbstractString) -> AbstractString

  2. Return the target location a symbolic link `path` points to.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1111-L1115)
  6. [Base.Filesystem.chmod](#Base.Filesystem.chmod) — Function

chmod(path::AbstractString, mode::Integer; recursive::Bool=false)

  2. Change the permissions mode of `path` to `mode`. Only integer `mode`s (e.g. `0o777`) are currently supported. If `recursive=true` and the path is a directory all permissions in that directory will be recursively changed. Return `path`.
  4. Note
  6. Prior to Julia 1.6, this did not correctly manipulate filesystem ACLs on Windows, therefore it would only set read-only bits on files. It now is able to manipulate ACLs.
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1135-L1147)
  10. [Base.Filesystem.chown](#Base.Filesystem.chown) — Function

chown(path::AbstractString, owner::Integer, group::Integer=-1)

  2. Change the owner and/or group of `path` to `owner` and/or `group`. If the value entered for `owner` or `group` is `-1` the corresponding ID will not change. Only integer `owner`s and `group`s are currently supported. Return `path`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1161-L1167)
  6. [Base.Libc.RawFD](#Base.Libc.RawFD) — Type

RawFD

  2. Primitive type which wraps the native OS file descriptor. `RawFD`s can be passed to methods like [stat](#Base.stat) to discover information about the underlying file, and can also be used to open streams, with the `RawFD` describing the OS file backing the stream.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/libc.jl#L22-L30)
  6. [Base.stat](#Base.stat) — Function

stat(file)

  2. Returns a structure whose fields contain information about the file. The fields of the structure are:
  4. <table><tbody><tr><th>Name</th><th>Description</th></tr><tr><td>desc</td><td>The path or OS file descriptor</td></tr><tr><td>size</td><td>The size (in bytes) of the file</td></tr><tr><td>device</td><td>ID of the device that contains the file</td></tr><tr><td>inode</td><td>The inode number of the file</td></tr><tr><td>mode</td><td>The protection mode of the file</td></tr><tr><td>nlink</td><td>The number of hard links to the file</td></tr><tr><td>uid</td><td>The user id of the owner of the file</td></tr><tr><td>gid</td><td>The group id of the file owner</td></tr><tr><td>rdev</td><td>If this file refers to a device, the ID of the device it refers to</td></tr><tr><td>blksize</td><td>The file-system preferred block size for the file</td></tr><tr><td>blocks</td><td>The number of such blocks allocated</td></tr><tr><td>mtime</td><td>Unix timestamp of when the file was last modified</td></tr><tr><td>ctime</td><td>Unix timestamp of when the file's metadata was changed</td></tr></tbody></table>
  6. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L170-L192)
  8. [Base.Filesystem.diskstat](#Base.Filesystem.diskstat) — Function

diskstat(path=pwd())

  2. Returns statistics in bytes about the disk that contains the file or directory pointed at by `path`. If no argument is passed, statistics about the disk that contains the current working directory are returned.
  4. Julia 1.8
  6. This method was added in Julia 1.8.
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L1208-L1217)
  10. [Base.Filesystem.lstat](#Base.Filesystem.lstat) — Function

lstat(file)

  2. Like [stat](#Base.stat), but for symbolic links gets the info for the link itself rather than the file it refers to. This function must be called on a file path rather than a file object or a file descriptor.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L195-L202)
  6. [Base.Filesystem.ctime](#Base.Filesystem.ctime) — Function

ctime(file)

  2. Equivalent to `stat(file).ctime`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L289-L293)
  6. [Base.Filesystem.mtime](#Base.Filesystem.mtime) — Function

mtime(file)

  2. Equivalent to `stat(file).mtime`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L282-L286)
  6. [Base.Filesystem.filemode](#Base.Filesystem.filemode) — Function

filemode(file)

  2. Equivalent to `stat(file).mode`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L252-L256)
  6. [Base.filesize](#Base.filesize) — Function

filesize(path…)

  2. Equivalent to `stat(file).size`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L275-L279)
  6. [Base.Filesystem.uperm](#Base.Filesystem.uperm) — Function

uperm(file)

  2. Get the permissions of the owner of the file as a bitfield of
  4. <table><tbody><tr><th>Value</th><th>Description</th></tr><tr><td>01</td><td>Execute Permission</td></tr><tr><td>02</td><td>Write Permission</td></tr><tr><td>04</td><td>Read Permission</td></tr></tbody></table>
  6. For allowed arguments, see [stat](#Base.stat).
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L405-L417)
  10. [Base.Filesystem.gperm](#Base.Filesystem.gperm) — Function

gperm(file)

  2. Like [uperm](#Base.Filesystem.uperm) but gets the permissions of the group owning the file.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L420-L424)
  6. [Base.Filesystem.operm](#Base.Filesystem.operm) — Function

operm(file)

  2. Like [uperm](#Base.Filesystem.uperm) but gets the permissions for people who neither own the file nor are a member of the group owning the file
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L427-L432)
  6. [Base.Filesystem.cp](#Base.Filesystem.cp) — Function

cp(src::AbstractString, dst::AbstractString; force::Bool=false, follow_symlinks::Bool=false)

  2. Copy the file, link, or directory from `src` to `dst`. `force=true` will first remove an existing `dst`.
  4. If `follow_symlinks=false`, and `src` is a symbolic link, `dst` will be created as a symbolic link. If `follow_symlinks=true` and `src` is a symbolic link, `dst` will be a copy of the file or directory `src` refers to. Return `dst`.
  6. Note
  8. The `cp` function is different from the `cp` command. The `cp` function always operates on the assumption that `dst` is a file, while the command does different things depending on whether `dst` is a directory or a file. Using `force=true` when `dst` is a directory will result in loss of all the contents present in the `dst` directory, and `dst` will become a file that has the contents of `src` instead.
  10. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L358-L375)
  12. [Base.download](#Base.download) — Function

download(url::AbstractString, [path::AbstractString = tempname()]) -> path

  2. Download a file from the given url, saving it to the location `path`, or if not specified, a temporary path. Returns the path of the downloaded file.
  4. Note
  6. Since Julia 1.6, this function is deprecated and is just a thin wrapper around `Downloads.download`. In new code, you should use that function directly instead of calling this.
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/download.jl#L8-L18)
  10. [Base.Filesystem.mv](#Base.Filesystem.mv) — Function

mv(src::AbstractString, dst::AbstractString; force::Bool=false)

  2. Move the file, link, or directory from `src` to `dst`. `force=true` will first remove an existing `dst`. Return `dst`.
  4. **Examples**

julia> write(“hello.txt”, “world”);

julia> mv(“hello.txt”, “goodbye.txt”) “goodbye.txt”

julia> “hello.txt” in readdir() false

julia> readline(“goodbye.txt”) “world”

julia> write(“hello.txt”, “world2”);

julia> mv(“hello.txt”, “goodbye.txt”) ERROR: ArgumentError: ‘goodbye.txt’ exists. force=true is required to remove ‘goodbye.txt’ before moving. Stacktrace: [1] #checkfor_mv_cp_cptree#10(::Bool, ::Function, ::String, ::String, ::String) at ./file.jl:293 […]

julia> mv(“hello.txt”, “goodbye.txt”, force=true) “goodbye.txt”

julia> rm(“goodbye.txt”);

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L389-L423)
  4. [Base.Filesystem.rm](#Base.Filesystem.rm) — Function

rm(path::AbstractString; force::Bool=false, recursive::Bool=false)

  2. Delete the file, link, or empty directory at the given path. If `force=true` is passed, a non-existing path is not treated as error. If `recursive=true` is passed and the path is a directory, then all contents are removed recursively.
  4. **Examples**

julia> mkpath(“my/test/dir”);

julia> rm(“my”, recursive=true)

julia> rm(“this_file_does_not_exist”, force=true)

julia> rm(“this_file_does_not_exist”) ERROR: IOError: unlink(“this_file_does_not_exist”): no such file or directory (ENOENT) Stacktrace: […]

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L252-L272)
  4. [Base.Filesystem.touch](#Base.Filesystem.touch) — Function

touch(path::AbstractString)

  2. Update the last-modified timestamp on a file to the current time.
  4. If the file does not exist a new file is created.
  6. Return `path`.
  8. **Examples**

julia> write(“my_little_file”, 2);

julia> mtime(“my_little_file”) 1.5273815391135583e9

julia> touch(“my_little_file”);

julia> mtime(“my_little_file”) 1.527381559163435e9

  2. We can see the [mtime](#Base.Filesystem.mtime) has been modified by `touch`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L430-L453)
  6. [Base.Filesystem.tempname](#Base.Filesystem.tempname) — Function

tempname(parent=tempdir(); cleanup=true) -> String

  2. Generate a temporary file path. This function only returns a path; no file is created. The path is likely to be unique, but this cannot be guaranteed due to the very remote posibility of two simultaneous calls to `tempname` generating the same file name. The name is guaranteed to differ from all files already existing at the time of the call to `tempname`.
  4. When called with no arguments, the temporary name will be an absolute path to a temporary name in the system temporary directory as given by `tempdir()`. If a `parent` directory argument is given, the temporary path will be in that directory instead.
  6. The `cleanup` option controls whether the process attempts to delete the returned path automatically when the process exits. Note that the `tempname` function does not create any file or directory at the returned location, so there is nothing to cleanup unless you create a file or directory there. If you do and `clean` is `true` it will be deleted upon process termination.
  8. Julia 1.4
  10. The `parent` and `cleanup` arguments were added in 1.4. Prior to Julia 1.4 the path `tempname` would never be cleaned up at process termination.
  12. Warning
  14. This can lead to security holes if another process obtains the same file name and creates the file before you are able to. Open the file with `JL_O_EXCL` if this is a concern. Using [mktemp()](#Base.Filesystem.mktemp-Tuple{AbstractString}) is also recommended instead.
  16. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L631-L661)
  18. [Base.Filesystem.tempdir](#Base.Filesystem.tempdir) — Function

tempdir()

  2. Gets the path of the temporary directory. On Windows, `tempdir()` uses the first environment variable found in the ordered list `TMP`, `TEMP`, `USERPROFILE`. On all other operating systems, `tempdir()` uses the first environment variable found in the ordered list `TMPDIR`, `TMP`, `TEMP`, and `TEMPDIR`. If none of these are found, the path `"/tmp"` is used.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L470-L477)
  6. [Base.Filesystem.mktemp](#Base.Filesystem.mktemp-Tuple{AbstractString}) — Method

mktemp(parent=tempdir(); cleanup=true) -> (path, io)

  2. Return `(path, io)`, where `path` is the path of a new temporary file in `parent` and `io` is an open file object for this path. The `cleanup` option controls whether the temporary file is automatically deleted when the process exits.
  4. Julia 1.3
  6. The `cleanup` keyword argument was added in Julia 1.3. Relatedly, starting from 1.3, Julia will remove the temporary paths created by `mktemp` when the Julia process exits, unless `cleanup` is explicitly set to `false`.
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L664-L675)
  10. [Base.Filesystem.mktemp](#Base.Filesystem.mktemp-Tuple{Function, AbstractString}) — Method

mktemp(f::Function, parent=tempdir())

  2. Apply the function `f` to the result of [mktemp(parent)](#Base.Filesystem.mktemp-Tuple{AbstractString}) and remove the temporary file upon completion.
  4. See also: [mktempdir](#Base.Filesystem.mktempdir-Tuple{AbstractString}).
  6. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L725-L732)
  8. [Base.Filesystem.mktempdir](#Base.Filesystem.mktempdir-Tuple{AbstractString}) — Method

mktempdir(parent=tempdir(); prefix=”jl_”, cleanup=true) -> path

  2. Create a temporary directory in the `parent` directory with a name constructed from the given prefix and a random suffix, and return its path. Additionally, any trailing `X` characters may be replaced with random characters. If `parent` does not exist, throw an error. The `cleanup` option controls whether the temporary directory is automatically deleted when the process exits.
  4. Julia 1.2
  6. The `prefix` keyword argument was added in Julia 1.2.
  8. Julia 1.3
  10. The `cleanup` keyword argument was added in Julia 1.3. Relatedly, starting from 1.3, Julia will remove the temporary paths created by `mktempdir` when the Julia process exits, unless `cleanup` is explicitly set to `false`.
  12. See also: [mktemp](#Base.Filesystem.mktemp-Tuple{AbstractString}), [mkdir](#Base.Filesystem.mkdir).
  14. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L678-L696)
  16. [Base.Filesystem.mktempdir](#Base.Filesystem.mktempdir-Tuple{Function, AbstractString}) — Method

mktempdir(f::Function, parent=tempdir(); prefix=”jl_”)

  2. Apply the function `f` to the result of [mktempdir(parent; prefix)](#Base.Filesystem.mktempdir-Tuple{AbstractString}) and remove the temporary directory all of its contents upon completion.
  4. See also: [mktemp](#Base.Filesystem.mktemp-Tuple{AbstractString}), [mkdir](#Base.Filesystem.mkdir).
  6. Julia 1.2
  8. The `prefix` keyword argument was added in Julia 1.2.
  10. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/file.jl#L749-L759)
  12. [Base.Filesystem.isblockdev](#Base.Filesystem.isblockdev) — Function

isblockdev(path) -> Bool

  2. Return `true` if `path` is a block device, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L339-L343)
  6. [Base.Filesystem.ischardev](#Base.Filesystem.ischardev) — Function

ischardev(path) -> Bool

  2. Return `true` if `path` is a character device, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L314-L318)
  6. [Base.Filesystem.isdir](#Base.Filesystem.isdir) — Function

isdir(path) -> Bool

  2. Return `true` if `path` is a directory, `false` otherwise.
  4. **Examples**

julia> isdir(homedir()) true

julia> isdir(“not/a/directory”) false

  2. See also [isfile](#Base.Filesystem.isfile) and [ispath](#Base.Filesystem.ispath).
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L321-L336)
  6. [Base.Filesystem.isfifo](#Base.Filesystem.isfifo) — Function

isfifo(path) -> Bool

  2. Return `true` if `path` is a FIFO, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L307-L311)
  6. [Base.Filesystem.isfile](#Base.Filesystem.isfile) — Function

isfile(path) -> Bool

  2. Return `true` if `path` is a regular file, `false` otherwise.
  4. **Examples**

julia> isfile(homedir()) false

julia> f = open(“test_file.txt”, “w”);

julia> isfile(f) true

julia> close(f); rm(“test_file.txt”)

  2. See also [isdir](#Base.Filesystem.isdir) and [ispath](#Base.Filesystem.ispath).
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L346-L365)
  6. [Base.Filesystem.islink](#Base.Filesystem.islink) — Function

islink(path) -> Bool

  2. Return `true` if `path` is a symbolic link, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L368-L372)
  6. [Base.Filesystem.ismount](#Base.Filesystem.ismount) — Function

ismount(path) -> Bool

  2. Return `true` if `path` is a mount point, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L473-L477)
  6. [Base.Filesystem.ispath](#Base.Filesystem.ispath) — Function

ispath(path) -> Bool

  2. Return `true` if a valid filesystem entity exists at `path`, otherwise returns `false`. This is the generalization of [isfile](#Base.Filesystem.isfile), [isdir](#Base.Filesystem.isdir) etc.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L298-L304)
  6. [Base.Filesystem.issetgid](#Base.Filesystem.issetgid) — Function

issetgid(path) -> Bool

  2. Return `true` if `path` has the setgid flag set, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L391-L395)
  6. [Base.Filesystem.issetuid](#Base.Filesystem.issetuid) — Function

issetuid(path) -> Bool

  2. Return `true` if `path` has the setuid flag set, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L384-L388)
  6. [Base.Filesystem.issocket](#Base.Filesystem.issocket) — Function

issocket(path) -> Bool

  2. Return `true` if `path` is a socket, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L375-L379)
  6. [Base.Filesystem.issticky](#Base.Filesystem.issticky) — Function

issticky(path) -> Bool

  2. Return `true` if `path` has the sticky bit set, `false` otherwise.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/stat.jl#L398-L402)
  6. [Base.Filesystem.homedir](#Base.Filesystem.homedir) — Function

homedir() -> String

  2. Return the current user's home directory.
  4. Note
  6. `homedir` determines the home directory via `libuv`'s `uv_os_homedir`. For details (for example on how to specify the home directory via environment variables), see the [uv\_os\_homedir documentation](http://docs.libuv.org/en/v1.x/misc.html#c.uv_os_homedir).
  8. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L54-L63)
  10. [Base.Filesystem.dirname](#Base.Filesystem.dirname) — Function

dirname(path::AbstractString) -> AbstractString

  2. Get the directory part of a path. Trailing characters ('/' or '\\') in the path are counted as part of the path.
  4. **Examples**

julia> dirname(“/home/myuser”) “/home”

julia> dirname(“/home/myuser/“) “/home/myuser”

  2. See also [basename](#Base.Filesystem.basename).
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L147-L163)
  6. [Base.Filesystem.basename](#Base.Filesystem.basename) — Function

basename(path::AbstractString) -> AbstractString

  2. Get the file name part of a path.
  4. Note
  6. This function differs slightly from the Unix `basename` program, where trailing slashes are ignored, i.e. `$ basename /foo/bar/` returns `bar`, whereas `basename` in Julia returns an empty string `""`.
  8. **Examples**

julia> basename(“/home/myuser/example.jl”) “example.jl”

julia> basename(“/home/myuser/“) “”

  2. See also [dirname](#Base.Filesystem.dirname).
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L166-L185)
  6. [Base.Filesystem.isabspath](#Base.Filesystem.isabspath) — Function

isabspath(path::AbstractString) -> Bool

  2. Determine whether a path is absolute (begins at the root directory).
  4. **Examples**

julia> isabspath(“/home”) true

julia> isabspath(“home”) false

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L87-L100)
  4. [Base.Filesystem.isdirpath](#Base.Filesystem.isdirpath) — Function

isdirpath(path::AbstractString) -> Bool

  2. Determine whether a path refers to a directory (for example, ends with a path separator).
  4. **Examples**

julia> isdirpath(“/home”) false

julia> isdirpath(“/home/“) true

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L103-L116)
  4. [Base.Filesystem.joinpath](#Base.Filesystem.joinpath) — Function

joinpath(parts::AbstractString…) -> String joinpath(parts::Vector{AbstractString}) -> String joinpath(parts::Tuple{AbstractString}) -> String

  2. Join path components into a full path. If some argument is an absolute path or (on Windows) has a drive specification that doesn't match the drive computed for the join of the preceding paths, then prior components are dropped.
  4. Note on Windows since there is a current directory for each drive, `joinpath("c:", "foo")` represents a path relative to the current directory on drive "c:" so this is equal to "c:foo", not "c:\\foo". Furthermore, `joinpath` treats this as a non-absolute path and ignores the drive letter casing, hence `joinpath("C:\A","c:b") = "C:\A\b"`.
  6. **Examples**

julia> joinpath(“/home/myuser”, “example.jl”) “/home/myuser/example.jl”

julia> joinpath([“/home/myuser”, “example.jl”]) “/home/myuser/example.jl”

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L329-L353)
  4. [Base.Filesystem.abspath](#Base.Filesystem.abspath) — Function

abspath(path::AbstractString) -> String

  2. Convert a path to an absolute path by adding the current directory if necessary. Also normalizes the path as in [normpath](#Base.Filesystem.normpath).
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L413-L418)

abspath(path::AbstractString, paths::AbstractString…) -> String

  2. Convert a set of paths to an absolute path by joining them together and adding the current directory if necessary. Equivalent to `abspath(joinpath(path, paths...))`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L433-L438)
  6. [Base.Filesystem.normpath](#Base.Filesystem.normpath) — Function

normpath(path::AbstractString) -> String

  2. Normalize a path, removing "." and ".." entries and changing "/" to the canonical path separator for the system.
  4. **Examples**

julia> normpath(“/home/myuser/../example.jl”) “/home/example.jl”

julia> normpath(“Documents/Julia”) == joinpath(“Documents”, “Julia”) true

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L356-L370)

normpath(path::AbstractString, paths::AbstractString…) -> String

  2. Convert a set of paths to a normalized path by joining them together and removing "." and ".." entries. Equivalent to `normpath(joinpath(path, paths...))`.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L405-L410)
  6. [Base.Filesystem.realpath](#Base.Filesystem.realpath) — Function

realpath(path::AbstractString) -> String

  2. Canonicalize a path by expanding symbolic links and removing "." and ".." entries. On case-insensitive case-preserving filesystems (typically Mac and Windows), the filesystem's stored case for the path is returned.
  4. (This function throws an exception if `path` does not exist in the filesystem.)
  6. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L460-L468)
  8. [Base.Filesystem.relpath](#Base.Filesystem.relpath) — Function

relpath(path::AbstractString, startpath::AbstractString = “.”) -> AbstractString

  2. Return a relative filepath to `path` either from the current directory or from an optional start directory. This is a path computation: the filesystem is not accessed to confirm the existence or nature of `path` or `startpath`.
  4. On Windows, case sensitivity is applied to every part of the path except drive letters. If `path` and `startpath` refer to different drives, the absolute path of `path` is returned.
  6. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L530-L539)
  8. [Base.Filesystem.expanduser](#Base.Filesystem.expanduser) — Function

expanduser(path::AbstractString) -> AbstractString

  2. On Unix systems, replace a tilde character at the start of a path with the current user's home directory.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L515-L519)
  6. [Base.Filesystem.splitdir](#Base.Filesystem.splitdir) — Function

splitdir(path::AbstractString) -> (AbstractString, AbstractString)

  2. Split a path into a tuple of the directory name and file name.
  4. **Examples**

julia> splitdir(“/home/myuser”) (“/home”, “myuser”)

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L119-L129)
  4. [Base.Filesystem.splitdrive](#Base.Filesystem.splitdrive) — Function

splitdrive(path::AbstractString) -> (AbstractString, AbstractString)

  2. On Windows, split a path into the drive letter part and the path part. On Unix systems, the first component is always the empty string.
  4. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L46-L51)
  6. [Base.Filesystem.splitext](#Base.Filesystem.splitext) — Function

splitext(path::AbstractString) -> (AbstractString, AbstractString)

  2. If the last component of a path contains one or more dots, split the path into everything before the last dot and everything including and after the dot. Otherwise, return a tuple of the argument unmodified and the empty string. "splitext" is short for "split extension".
  4. **Examples**

julia> splitext(“/home/myuser/example.jl”) (“/home/myuser/example”, “.jl”)

julia> splitext(“/home/myuser/example.tar.gz”) (“/home/myuser/example.tar”, “.gz”)

julia> splitext(“/home/my.user/example”) (“/home/my.user/example”, “”)

  2. [source](https://github.com/JuliaLang/julia/blob/17cfb8e65ead377bf1b4598d8a9869144142c84e/base/path.jl#L188-L206)
  4. [Base.Filesystem.splitpath](#Base.Filesystem.splitpath) — Function

splitpath(path::AbstractString) -> Vector{String}

  2. Split a file path into all its path components. This is the opposite of `joinpath`. Returns an array of substrings, one for each directory or file in the path, including the root directory if present.
  4. Julia 1.1
  6. This function requires at least Julia 1.1.
  8. **Examples**

julia> splitpath(“/home/myuser/example.jl”) 4-element Vector{String}: “/“ “home” “myuser” “example.jl” ```

source