Linux Cmd Tool 系列之—alias-优快云博客

本文介绍如何使用alias和unalias命令来简化bash shell会话中的命令输入，包括设置和取消别名的方法，以及一些实用的例子。文章还介绍了如何在用户的~/.bashrc文件中配置持久化的别名，并说明了如何使更改立即生效。

The alias cmd list your current aliases. For example :

alias

Use alias to shorten a long cmd in current shell session:

alias [name=['command']]

Use unalias to remove the alias , or use "\"(back-slash) before command to disable alias.

Your ~/.bashrc file might look like:

alias cp='cp −vi' #to prompt when copying if you want to overwrite and will tell you where 
alias rm='rm −i' #Prompts you if you really want to remove it.
alias mv='mv −i' #Prompts you if you are going to overwrite something

System-wide aliases can be put in the /etc/bashrc

If you are already in one shell session and you want to apply the new .bashrc immediately :

source ~/.bashrc

Examples:

1. Simplify pathing

alias ..='cd ..'
alias ...='cd ../../'
alias ....='cd ../../../'
alias .....='cd ../../../../'

2. Call multiple cmds

alias pl='pwd; ls'

3. Call other aliases

alias p="pwd"
alias l="ls -la"
alias l="p; l"

4. Creating two separate aliases simultaneously

alias p="pwd"; l="ls -al"

5. Remove all aliases

unalias -a

转载于:https://www.cnblogs.com/moong/p/5904566.html