Screen

external links

http://www.gnu.org/software/screen/manual/screen.html

functions

<pre> # Setup a screen session for an environment. screen_site(){ local SITE SAVEIFS NUMBER MACHINE TITLE SITE=${1} SCREENSESSION=$(screen -ls | grep .${SITE}) if [ "${SCREENSESSION}" ] then echo "Screen ${SITE} exists. Conncting to:" echo "${SCREENSESSION}" sleep 2 screen -rx ${SITE} return else SAVEIFS=${IFS} NUMBER="0" IFS=$(echo -en "\n\b") screen -S ${SITE} -d -m for ROW in $(echo -e "${!SITE}") do MACHINE=$(echo ${ROW} | awk '{print $1}') TITLE=$(echo ${ROW} | awk '{print $2}') screen_ssh ${SITE} ${NUMBER} ${MACHINE} ${TITLE} NUMBER=$((NUMBER +1)) done IFS=${SAVEIFS} screen -r ${SITE} fi } # Create new window and give it a title and connect to machine. screen_ssh(){ local SITE NUMBER MACHINE TITLE SITE="${1}" NUMBER="${2}" MACHINE="${3}" TITLE="${4}" if [ "${NUMBER}" -ne 0 ] then screen -S ${SITE} -X screen ${NUMBER} fi screen -S ${SITE} -X -p ${NUMBER} select ${NUMBER} screen -S ${SITE} -X -p ${NUMBER} title "${SITE}_${TITLE}" screen -S ${SITE} -X -p ${NUMBER} exec ssh -Y "${MACHINE}" screen -S ${SITE} -X -p ${NUMBER} wall "Connected to ${MACHINE} ${TITLE}" } # Group of machines machines needed by screen_site. T1="10.1.93.10 RAPPO 10.1.21.10 NAPS1 10.1.21.11 NAPS2 10.1.21.12 NAPS3 10.1.21.13 NAPS4 10.1.21.14 NAPS5 10.1.21.15 NAPS6 10.1.21.16 NAPS6 10.1.21.40 NAPSGH1 10.1.21.50 NAPS-HELP 10.1.21.150 PLS1 10.1.21.151 PLS2" # Run a command in a group of windows. screen_cluster(){ if [ $# -lt 3 ] then echo "You wrote: ${FUNCNAME} ${@}" echo "${FUNCNAME} SESSIONNAME 'command' SCREENS" SESSIONNAMES=$(screen -ls | grep -E '[[:blank:]][0-9]{2,}' | awk '{print $1}' | sed 's/^[0-9.]*//g') echo "SESSIONNAME available are:" echo "${SESSIONNAMES}" else SESSIONNAME=${1} COMMAND=${2} shift 2 SCREENS="${@}" for SCREEN in ${SCREENS} do screen -S ${SESSIONNAME} -p ${SCREEN} -X stuff "${COMMAND} " if [ $? -ne 0 ] then screen_cluster return 1 fi done fi } # Split screen in regions with wanted windows. screen_split(){ if [ $# -lt 2 ] then echo "Splits screen in regions and show chosen windows." echo "${FUNCNAME} SESSIONNAME SCREENS" else SCREENSESSION="${1}" shift WINDOWSTART="${1}" NUMBERSCREEN="${#}" shift WINDOWSOPEN="${@}" screen -S ${SCREENSESSION} -p ${WINDOWSTART} -X select ${WINDOWSTART} screen -S ${SCREENSESSION} -p ${WINDOWSTART} -X only sleep 0.2 for WINDOWOPEN in ${WINDOWSOPEN} do sleep 0.2 screen -S ${SCREENSESSION} -p ${WINDOWSTART} -X split screen -S ${SCREENSESSION} -p ${WINDOWSTART} -X focus screen -S ${SCREENSESSION} -p ${WINDOWOPEN} -X select ${WINDOWOPEN} done screen -S ${SCREENSESSION} -p ${WINDOWSTART} -X wall "Opened ${NUMBERSCREEN} screen windows" fi } </pre>