1.查看别名
alias
xiaohuang@xiaohuang-virtual-machine:~$ alias alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"' alias egrep='egrep --color=auto' alias fgrep='fgrep --color=auto' alias grep='grep --color=auto' alias l='ls -CF' alias la='ls -A' alias ll='ls -alF' alias ls='ls --color=auto'
alias l="ls -al"
xiaohuang@xiaohuang-virtual-machine:~/桌面$ alias l="ls -al" xiaohuang@xiaohuang-virtual-machine:~/桌面$ ls -al 总用量 358028 drwxr-xr-x 3 xiaohuang xiaohuang 4096 8月 31 19:08 . drwxr-xr-x 28 xiaohuang xiaohuang 4096 9月 8 16:32 .. drwxrwxr-x 11 root root 4096 8月 30 15:31 pycharm-2018.2.2 -rwxr-xr-x 1 xiaohuang xiaohuang 248 8月 31 19:08 pycharm.desktop -rwx--x--x 1 root root 12288 8月 31 19:05 .pycharm.desktop.swp -rw-r--r-- 1 xiaohuang xiaohuang 343667267 8月 26 19:28 pycharm-professional-2018.2.2.tar.gz -rw-rw-r-- 1 xiaohuang xiaohuang 22915896 4月 19 09:11 sogoupinyin_2.2.0.0108_amd64.deb?st=93MRCONlxfWCyBCObV-Fvg -rw-r--r-- 1 xiaohuang xiaohuang 2995 8月 30 16:05 新建文本文档.txt xiaohuang@xiaohuang-virtual-machine:~/桌面$ l 总用量 358028 drwxr-xr-x 3 xiaohuang xiaohuang 4096 8月 31 19:08 . drwxr-xr-x 28 xiaohuang xiaohuang 4096 9月 8 16:32 .. drwxrwxr-x 11 root root 4096 8月 30 15:31 pycharm-2018.2.2 -rwxr-xr-x 1 xiaohuang xiaohuang 248 8月 31 19:08 pycharm.desktop -rwx--x--x 1 root root 12288 8月 31 19:05 .pycharm.desktop.swp -rw-r--r-- 1 xiaohuang xiaohuang 343667267 8月 26 19:28 pycharm-professional-2018.2.2.tar.gz -rw-rw-r-- 1 xiaohuang xiaohuang 22915896 4月 19 09:11 sogoupinyin_2.2.0.0108_amd64.deb?st=93MRCONlxfWCyBCObV-Fvg -rw-r--r-- 1 xiaohuang xiaohuang 2995 8月 30 16:05 新建文本文档.txt
3. 永久别名
vim ~/.bashrc (修改/.bashrc) alias l='ls -al' (alias 别名="原命令") source ~/.bashrc (让配置文件立即生效)