Remove function definition (unalias equivalent)

Question

I'm currently building a program which adds to the current user's shell depending on the project he's working on, by defining per-project aliases and functions. These aliases and functions may and will certainly have the same name like for instance cdproj, which would cd to the project's root.

I would like to remove previously defined aliases and functions when changing project (before (re)defining aliases and functions for the other project. I know I can remove an alias with unalias in both bash and zsh, but how would I do the same for a function?

Interesting thing is that this is not totally a duplicate. The question is not about bash only. There is a reference to `zsh` too. — Victor Yarema, Nov 06 '17 at 22:25
@VictorYarema More interesting, Zsh tag was recently added to that question (direct edit by high-reputation users), making this a valid duplicate. — Franklin Yu, Jan 18 '20 at 07:11
This happend to `grep`. I couldn't decide whether it was funny or not. I couldn't grep for possible locations. — Sridhar Sarnobat, Apr 29 '22 at 02:16

score 114 · Accepted Answer · answered Jul 24 '11 at 13:58

114

unset -f my_function

will remove (or unset) the function my_function

answered Jul 24 '11 at 13:58

ennuikiller

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`-f` is for function, as opposed to upsetting a regular variable. Explained in this duplicate: http://stackoverflow.com/a/245409/1695680 – ThorSummoner Jun 08 '15 at 17:55
`unset` works in zsh, seems the `bash`-style. – Timo May 04 '21 at 19:16

score 29 · Answer 2 · answered Jul 08 '15 at 23:55

29

unfunction my_function in zsh

Perhaps, I'm a bit late in this good old '15, but this feature persists.

answered Jul 08 '15 at 23:55

theoden8

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Nice! This is more consistent with `unalias`, though perhaps a bit unwieldy. – Oct 02 '15 at 17:02
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It is never too late. Thanks. – Victor Yarema Nov 06 '17 at 22:15

Remove function definition (unalias equivalent)

2 Answers2

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