How to pass command line arguments to a shell alias?

2018-06-20 07:01:11

How do I pass the command line arguments to an alias? Here is a sample:

alias mkcd='mkdir $1; cd $1;'

But in this case the $xx is getting translated at the alias creating time and not at runtime. I have, however, created a workaround using a shell function (after googling a little) like below:

function mkcd(){
  mkdir $1
  cd $1
}

Just wanted to know if there is a way to make aliases that accept CL parameters.
BTW - I use 'bash' as my default shell.

You found the way: create a function instead of an alias. The C shell has a mechanism for doing arguments to aliases, but bash and the Korn shell don't, because the function mechanism is more flexible and offers the same capability.

Just to reiterate what has been posted for other shells, in Bash the following works:

alias blah='function _blah(){ echo "First: $1"; echo "Second: $2"; };_blah'

Running the following:

blah one two

Gives the output below:

First: one
Second: two

You cannot in ksh, but you can in csh.

alias mkcd 'mkdir !^; cd !^1'

In ksh, function is the way to go. But if you really really wanted to use alias:

alias mkcd='_(){ mkdir $1; cd $1; }; _'

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