How do I do 'if X is a function, unfunction it' ?

[Timothy J Luoma]

Pretty much says it all.

for example, if the command 'cp' has been previously defined as a function,
then I want to unfunction it

TjL

[Bart Schaefer]

On May 1, 11:45am, Timothy J Luoma wrote:
> Subject: How do I do 'if X is a function, unfunction it' ?

>
> for example, if the command 'cp' has been previously defined as a function,
> then I want to unfunction it

You mean, without getting a "no such hash table element" warning?

How about

function unfunction() {
for i; do
function $i () { }
builtin unfunction $i
done
}

[Zoltan Hidvegi]

> for example, if the command 'cp' has been previously defined as a function,
> then I want to unfunction it

[[ `type cp` == *' function' ]] && unfunction cp

This works unmodified in ksh too.

Zoli