设置别名

1.1 别名，有些命令很危险，修改别名防止误操作

1.1.1查看别名

[[email protected] ~]# alias

alias cp=‘cp -i‘

alias l.=‘ls -d .* --color=auto‘

alias ll=‘ls -l --color=auto‘

alias ls=‘ls --color=auto‘

alias mv=‘mv -i‘

alias which=‘alias | /usr/bin/which --tty-only--read-alias --show-dot --show-tilde‘

[[email protected] ~]#

1.1.2临时修改别名，重启服务器失效

[[email protected] ~]# alias rm=‘echo -bash: rm:command not found‘

[[email protected] ~]# rm -rf /tmp

-bash: rm: command not found -rf /tmp

[[email protected] ~]#

1.1.3把修改写入配置文件

[[email protected] ~]# echo "alias rm=‘echo-bash: rm: command not found‘" >> /etc/profile

[[email protected] ~]# tail -2 /etc/profile           ##检查是否修改成功

unset -f pathmunge

alias rm=‘echo -bash: rm: command not found‘

[[email protected] ~]#

1.1.4让配置文件生效

[[email protected] ~]# source /etc/profile

[[email protected] ~]#

1.1.5如果命令有其他别名，这里还要修改/root/.bashrc文件

[[email protected] ~]# cat /root/.bashrc

# .bashrc

# User specific aliases and functions

#alias rm=‘rm -i‘      ##把原来的别名删掉或注释掉

alias cp=‘cp -i‘

alias mv=‘mv -i‘

# Source global definitions

if [ -f /etc/bashrc ]; then

./etc/bashrc

fi

[[email protected] ~]#

1.1.5.1 等下次重启服务器后别名永久生效

每天都需要成长。。。