Yes. If you don't need the output (or don't mind any output being a mashup of all), and don't care about their exit statuses, you can just do
Code:
#!/bin/bash
while read device dummy ; do
(
# Login to "$device", do the work
) &
done < devices.txt
wait
If you need the conversation log from each device, you can do eg.
Code:
#!/bin/bash
WORK="`mktemp -d`" || exit $?
trap "rm -rf '$WORK'" EXIT
while read device dummy ; do
( exec &>"$WORK/${device//\//_}.log"
# Do the login stuff.
# Use 'exit' to quit early, if problems occur.
# Only do this if success.
touch "$WORK/${device//\//_}.ok"
) &
done < devices.txt
wait
while read device dummy ; do
if [ -e "$WORK/${device//\//_}.ok" ]; then
echo "$device: Success" >&2
else
echo "$device: Failure" >&2
fi
cat "$WORK/${device//\//_}.log"
echo
done < devices.txt
Note that you can add further files into
$WORK (for example, describing errors if any), and not worry about them being cleaned up, because the
trap will always remove it and its contents automatically when the script exits, no matter the reason.
The script will also exit with failure (nonzero status) if any of the device logins failed.
Does this work for you, or do you also need interactive input for the login processes?
Nominal Animal
