Unable to execute a bash function

[YorkZ]

For example, if I have a bash function defined in a script:

function foo()
{
}

and trying to run it as another user in the same script:

su-exec user-foo foo

I would get an error, something similar to "file foo not exist ...."

As a compassion, the su command works in this scenario:

export -f foo
su user-foo -c foo

[tianon]

The difference is that the su command is actually running the user-foo user's default SHELL, which is likely Bash and is thus expanding the exported function. To achieve the same result with the lower-level su-exec, you'll need to explicitly invoke Bash, ala:

$ export -f foo
$ su-exec user-foo bash -c 'foo'