Bash hints

May 10, 2016

Lockfile example

LOCKFILE="/tmp/`basename $0`.lock"
trap "echo Aborting!; rm $LOCKFILE; exit 1" SIGHUP SIGINT SIGTERM
if [ -f $LOCKFILE ];
then
  ps -ef | grep "`basename $0`"
  echo "$LOCKFILE: Lockfile exists."
  exit 1
fi
touch $LOCKFILE
# code
rm $LOCKFILE
exit 0

Logfile umleiten

LOGFILE="/tmp/`basename "$0" .sh`.log"
exec 1>${LOGFILE}
exec 2>&1

Configure Automatic Logout (Linux)

Found at cyberciti.biz:

cat << EOF >/etc/profile.d/timeout-settings.sh
#!/bin/bash
TMOUT=300
readonly TMOUT
export TMOUT

EOF

Screen

vi ~/.screenrc
utf8 on
#idle 3600 pow_detach
deflog on
logtstamp on
logfile ${HOME}/.screenlog/screenlog.%n

# optional for hardcopy (like printscreen)
harcopydir ${HOME}/.screenlog

hardstatus alwayslastline
hardstatus string '%{= kG}[ %{G}%H %{g}][%= %{= kw}%?%-Lw%?%{r}(%{W}%n*%f %t%?(%u)%?%{r})%{w}%?%+Lw%?%?%= %{g}][%{B} %Y-%m-%d %{W}%c %{g}]'