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Hack 21. Change the Case Using tr Command
Hack 21. Change the Case Using tr Command Hack 21. Change the Case Using tr Command by Ramesh Convert a file to all upper-case using tr command as shown below. $ cat emplo... -
Hack 49. Combine gzip, bzip2 with tar
Hack 49. Combine gzip, bzip2 with tar How to use gzip with tar? How to use bzip2 with tar? Hack 49. Combine gzip, bzip2 with tar by Ramesh How to use gzip with tar? Add... -
Hack-84 关于.bash_*的执行顺序
关于.bash_*的执行顺序 交互式shell的执行顺序 non-login shell的顺序 测试. 关于.bash_*的执行顺序 这一篇介绍了下面这些文件的执行顺序: /etc/profile ~/.bash_profile ~/.bashrc ~/.bash_login ~/.profile ~/.bash_logout ... -
Hack-59 新建一个swap分区
新建一个swap分区 新建一个swap分区 首先, 你知道什么是交换分区(swap)嘛? 不知道的话先去查查吧! 如果内存不是很紧张, 也不需要休眠的话, Swap 分区在个人主机上存在的意义已经不是很大了.我自己是一块120G的SSD, 所以硬盘很吃紧, 分出8G的大小给Swap 太不划算了, 而且内存已经足够用了, 所以我就取消了Swap 分... -
Hack-47 给压缩包加个锁
给压缩包加个锁 给压缩包加个锁 我们知道RAR 可以添加密码, 其实, ZIP 也可以的. 命令: zip - P mysecurepwd var - log - protected . zip / var / log /* 如果你觉得这样明文记录密码不好的话, 还可以交互式的输入密码: zip - e var - log ... -
Hack-44 给点颜色给PS1
给点颜色给PS1 1.字体颜色 2.字体背景色 3.组合 4.tput 命令 扩展阅读 给点颜色给PS1 这里介绍了一堆关于彩色显示的代码… 1.字体颜色 用下面的代码可以让PS1 变成蓝色: export PS1 = "\e[0;34m\u@\h \w> \e[m " 知道这是为什么嘛? 因为我们在中间嵌入了颜色代码... -
Hack 34. Display username, hostname and basename of directory in the prompt
Hack 34. Display username, hostname and basename of directory in the prompt Hack 34. Display username, hostname and basename of directory in the prompt by Ramesh The PS1 in... -
Hack 9. Display Current Date and Time in a Specific Format
Hack 9. Display Current Date and Time in a Specific Format Hack 9. Display Current Date and Time in a Specific Format by Ramesh Following are different ways of displaying t... -
Hack 8. Set Hardware Date and Time Using hwclock
Hack 8. Set Hardware Date and Time Using hwclock Hack 8. Set Hardware Date and Time Using hwclock by Ramesh Before setting the hardware date and time, make sure the OS date... -
Hack 88. Read data file fields inside a shell script
Hack 88. Read data file fields inside a shell script Hack 88. Read data file fields inside a shell script by Ramesh This example shows how to read a particular field from a...