alias 是创建别名的 用命令和组合，做成的新命令
[root@localhost ~]# aliasalias cp='cp -i'
alias egrep='egrep --color=auto'
alias fgrep='fgrep --color=auto'
alias grep='grep --color=auto'
alias l.='ls ...
Add an email address
Go to Add an alias. Sign in to your Microsoft account, if prompted.Under Add an alias, do one of the following:
Create a new Outlook.com email address and add it as an alias.Add a...
