On Sat, Sep 28, 2019 at 07:13:32AM +0200, Jean-Philippe MENGUAL wrote:
> > You might want to check by adding this part to your script (before the
> > part "echo CTRL+C to..."):
> >
> > proc=`fuser /dev/dsp| awk "{print $2}"`
> > if [ -n ${proc+x} ]; then
> > ps auxww | awk '($2 == '$proc'){print $0}'
> > else
> > echo "no process is obtaining /dev/dsp"
> > fi
> >
> > and it will print which process is obtaining the /dev/dsp
>
> hmmm I get:
> awk: line 1: syntax error at or near )
Yeah, the quoting is rather messed up there. In fact, the whole command
is rather suspect, for several reasons. Best to discard it.
I believe the intent was to do something like this:
if pids=$(fuser /dev/dsp 2>/dev/null); then
echo "the following processes are using /dev/dsp:"
for pid in $pids; do
ps -o pid= -o args= -p "$pid"
done
else
echo "no processes are using /dev/dsp"
fi
One may adjust the ps -o options as desired.
(I wrote this for sh, not bash. Had I written it for bash, I would have
used arrays and a dynamically generated single ps command, instead of
an unquoted list-in-a-string and multiple ps commands.)
