Alias command alias, and cancel the alias unalias

Using the alias command

alias shows the current shell process all the available command aliases

Define an alias NAME, equivalent to execute the command VALUE, alias defined in the command line is only valid in the current shell, the newly opened shell can not be used.

alias NAME='VALUE'

[root@XX ~]# which who
/usr/bin/who
[root@XX ~]# whereis who
who: /usr/bin/who /usr/share/man/man1/who.1.gz /usr/share/man/man1p/who.1p.gz
[root@XX ~]# which ls
alias ls='ls --color=auto'
    /usr/bin/ls

 

If you want permanent, to be defined in the configuration file

Valid for the current user: ~ / .bashrc home directory .bashrc hidden files

Effective for all users: / etc / bashrc

The new configuration will not edit the configuration file is given immediately after the effective implementation of effective demand

Use the command source / path / to / config or. / Path / to / config

 

Use the command unalias

unalias NAME canceled temporary alias NAME

unalias -a Cancel all temporary alias NAME

 

If the alias command of the same name on the original, if you want to execute the original command, you can use the following method

\cmd

"cmd"

' cmd'

command cmd

/path/command