An alias is nothing but shortcut to commands. The alias command allows user to launch any command or group of commands (including options and filenames) by entering a single word. Aliases are mainly used for abbreviating a system command, or for adding default arguments to a regularly used command.
To view defined aliases the following commands can be used:
alias cp='cp -i' alias l='ls $LS_OPTIONS -lA' alias ll='ls $LS_OPTIONS -l' alias ls='ls $LS_OPTIONS' alias mv='mv -i' alias rm='rm -i' alias apt-get='apt-get update && apt-get upgrade'
How to ignore aliases or functions when running a command?
Simply use command called command as follows to ignore aliases or functions. For example, on my system I’ve following aliases set:
alias apt-get='apt-get update && apt-get upgrade'
To ignore apt-get alias, enter:
command apt-get -y install
You can also use any one of the following syntax:
\apt-get -y install
"apt-get" -y install
Both \ and ” symbols allows you to run real apt-get command and ignore apt-get alias.
More about ‘command’ command
Runs COMMAND with ARGS ignoring shell functions. If you have a shell function called ls, and you wish to call the command /bin/ls command, you can type:
If the -p option is given, a default value is used for PATH that is guaranteed to find all of the standard utilities under UNIX / Linux:
command -p ls
The -V or -v option is given, a string is printed describing COMMAND. The -V option produces a more verbose description:
command -v ls
ls is aliased to `ls $LS_OPTIONS'
Type command will print information about alias, function and real command:
type -a apt-get
apt-get is aliased to `apt-get update && apt-get upgrade' apt-get is /usr/bin/apt-get