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I want to remove gs alias from my PC. When I type gs it will open GhostScript. But I checked everywhere in the home directory .alias .bash_aliases .bashrc
I also overwrite the gs with my custom alias.
I can't remove it. And I also type alias in terminal, in the list I couldn't find it.
Please I want to remove it...
The command to remove an alias is unalias so....
unalias gs
NAME
unalias - remove alias definitions
SYNOPSIS
unalias alias-name...
unalias -a
DESCRIPTION
The unalias utility shall remove the definition for each alias name specified. See Alias Substitution . The aliases shall be removed from the current shell execution environment; see Shell Execution Environment .
-aRemoves All aliases
unalias -a will remove all alias definitions from the current shell execution environment., possibly including other innocent ones.
unalias removes an alias or aliases from the current shell, but if they are 'stored' in for example ~/.bashrc, they will come back when you create a new shell (or terminal window). So you should remove the definition of the aliases from where they are stored in order to get rid of them, unless they are temporary aliases.
TL;DR: The command to remove a shell alias is unalias. See the unalias manual. Run:
unalias gs
But if your gs command is not an alias (most likely), it will not help. The response will be something like:
bash: unalias: gs: not found
To find the type of the command trouble you're in, use type built-in shell command:
type gs
On my system it says it is an executable:
gs is /usr/bin/gs
Compare that with a common alias ll:
alias ll='ls -l'
type ll
ll is aliased to `ls -l'
See help type for detailed description of the type shell built-in command
You can also check if it is a symbolic link with:
ls -la /usr/bin/gs
On my system it isn't:
-rwxr-xr-x 1 root root 14520 Aug 24 17:03 /usr/bin/gs
Otherwise there would be an arrow like this:
-rwxr-xr-x 1 root root 14520 Aug 24 17:03 /usr/bin/gs -> /some/other/file
As pointed out by others, removing the alias from the current shell session is temporary. For permanent removal, you will need to find where it is defined, such as alias gs=xyz, and remove it there, or add unalias gs to your ~/.profile or ~/.bashrc file.
If it is not an alias, you can locate the package that installed the command and uninstall it. On Debian/Ubuntu for instance:
dpkg -S /usr/bin/gs
ghostscript: /usr/bin/gs
sudo apt-get remove ghostscript
If unalias is not working, as is currently the case with fish-shell (refer to this issue #7132 from fish-shell github page for more details), you can use functions with -e (erase functions) to erase the alias.
functions -e [alias name]
type gsto check if the command is an executable file, an alias, a bash function or a bash builtin.alias --help, unhelpfully, does not reveal any useful answer to this question