xNightR00T File Manager

#! /bin/bash
# test_device sends a short message ($1) to device ($2).
# Timeout is set to $3 sec.
# Exits:   0 doesn't seem to have a problem
#          1 operation has timed out
#          2 problems while writing to $2
#
# Jan Holesovsky <kendy@suse.cz>, 2000
# Johannes Meixner <jsmeix@suse.de>, 2008, 2010, 2011
# $Id: test_device 2928 2002-06-27 08:53:17Z jsrain $

#set -x

# Make sure to have a clean environment:
export PATH="/sbin:/usr/sbin:/usr/bin:/bin"
export LC_ALL="POSIX"
export LANG="POSIX"
umask 022
# Disable bash file name globbing:
set -f

EXITCODE=2
trap "EXITCODE=0" 10

[ "$2" != "/dev/null" ] && fuser -k $2  # kill all processes using the device

( sleep $3 ) &
SL=$!
( echo -en "$1" > $2 && kill -10 $$ ; kill $SL ) &
PR=$!
wait $SL && kill $PR && exit 1    # It cannot finish, it has timed out
exit $EXITCODE                    # How the prining finished?