1

There is my script (simplified):

cd /etc; for f in *.{conf,cfg,foo}; do echo $f; done

It outputs something like

adduser.conf
apg.conf
...
vdpau_wrapper.cfg
*.foo

(just an example)

Just for now I using something like

for f in *.{conf,cfg,foo}; do test -f $f && echo $f; done

because of *.foo (no files matched to the mask)

Is there any more convenient solution (e.g. do not list *.ext if no such files found)?

In other words: I want to avoid *.foo line in the output when no files matched to the *.foo mask.

2

You can use:

shopt -s nullglob

Disable it again using:

shopt -u nullglob

If you're writing a shell function that needs to unconditionally enable or disable a shopt setting temporarily and then revert back to whatever the previous state was, you could do:

oldshopt=$(shopt -p)
shopt -s nullglob
<do stuff...>
eval "$oldshopt"

There is also the opposite option, failglob, which causes an error message whenever a glob expansion fails.

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