CODEWITHSUNDEEP
linuxshell
Dipankar Deka
Dipankar Deka

Reputation: 13

Custom command creation

I have used the command alias filecreate='touch $1' in my script to create a new file in my present working directory with the help of filecreate as custom command. But when I execute the script it's showing error. Also how do I make the command to accept 2 parameters one the filename and other the pathname.

Upvotes: 0

Views: 57

Answers (1)

Petr Skocik
Petr Skocik

Reputation: 60068

alias filecreate=touch

or its function equivalent:

filecreate(){ touch "$@"; }

will accept an arbitrary number of arguments and pass them to touch.

Positional argument expansions usually don't belong in aliases, as aliases, unlike functions, don't get their own positional argument arrays. Aliases are simple text expansions.

Your 

alias filecreate='touch "$1"'

when run like so:

filecreate SomeFile

would simply expand to 

 filecreate "$1" SomeFile #$1 comes from the caller

This differs from functions and scripts, which do get their own argument array.

Upvotes: 3

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