{"id":3420,"date":"2014-08-06T00:48:50","date_gmt":"2014-08-05T16:48:50","guid":{"rendered":"http:\/\/rmohan.com\/?p=3420"},"modified":"2014-08-07T14:08:57","modified_gmt":"2014-08-07T06:08:57","slug":"if-condition-integer-expression-expected","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=3420","title":{"rendered":"if condition-integer expression expected"},"content":{"rendered":"

if condition-integer expression expected<\/strong><\/p>\n

ADV1=94.3
\nQuantity=96.3
\nif [ $Quantity -eq $ADV1 ]; then
\n echo “quantity is greter”
\nfi<\/p>\n

echo “” | nawk -v ADV1=94.3 -v Quantity=96.3 ‘{if(ADV1 $Quantity “|bc) -eq 1 ] ; then
\necho “$ADV1 is greter”
\nelse
\necho “$Quantity is greater”
\nfi<\/p>\n

ADV1=94.3
\nQuantity=96.3
\nif [ $Quantity -gt $ADV1 ]; then
\n echo “quantity is greter”
\nfi<\/p>\n

if [ “$var1” -lt “$var2” ]; then
\n echo “$var1 is lt $var2”
\nelse
\n echo “$var2 is lt $var1”
\nfi<\/p>\n

if ((var1> \/tmp\/log&
\n# background cmd pid
\npid=$!
\n# loop to monitor running background cmd
\nwhile :
\ndo
\n ps ax | grep $pid | grep -v grep
\n ret=$?
\n if test “$ret” != “0”
\n then
\n echo “Monitored pid ended”
\n exit
\n fi
\n sleep 5<\/p>\n

done<\/p>\n

wait $pid
\necho $?<\/p>\n

!\/bin\/bash
\nCHECK=$0
\nSERVICE=$1
\nDATE=`date`
\nOUTPUT=$(ps aux | grep -v grep | grep -v $CHECK |grep $1)
\necho $OUTPUT
\nif [ “${#OUTPUT}” -gt 0 ] ;
\nthen echo “$DATE: $SERVICE service running, everything is fine”
\nelse echo “$DATE: $SERVICE is not running”
\nfi<\/p>\n

#!\/bin\/sh<\/p>\n

SERVICE=”$1″
\nRESULT=`ps -a | sed -n \/${SERVICE}\/p`<\/p>\n

if [ “${RESULT:-null}” = null ]; then
\n echo “not running”
\nelse
\n echo “running”
\nfi<\/p>\n

#!\/bin\/bash
\nps axho comm| grep $1 > \/dev\/null
\nresult=$?
\necho “exit code: ${result}”
\nif [ “${result}” -eq “0” ] ; then
\necho “`date`: $SERVICE service running, everything is fine”
\nelse
\necho “`date`: $SERVICE is not running”
\n\/etc\/init.d\/$1 restart
\nfi<\/p>\n

#!\/bin\/sh
\nSERVICE=$1
\nif ps ax | grep -v grep | grep -v $0 | grep $SERVICE > \/dev\/null
\nthen
\n echo “$SERVICE service running, everything is fine”
\nelse
\n echo “$SERVICE is not running”
\nfi<\/p>\n

!\/bin\/sh<\/p>\n

PROCESS=”$1″
\nPROCANDARGS=$*<\/p>\n

while :
\ndo
\n RESULT=`pgrep ${PROCESS}`<\/p>\n

if [ “${RESULT:-null}” = null ]; then
\n echo “${PROCESS} not running, starting “$PROCANDARGS
\n $PROCANDARGS &
\n else
\n echo “running”
\n fi
\n sleep 10
\ndone <\/p>\n

#!\/bin\/bash
\nps_out=`ps -ef | grep $1 | grep -v ‘grep’ | grep -v $0`
\nresult=$(echo $ps_out | grep “$1”)
\nif [[ “$result” != “” ]];then
\n echo “Running”
\nelse
\n echo “Not Running”
\nfi<\/p>\n

# simulate a long process that will have an identifiable exit code
\n(sleep 15 ; \/bin\/false) &
\nmy_pid=$!<\/p>\n

while ps | grep ” $my_pid ” # might also need | grep -v grep here
\ndo
\n echo $my_pid is still in the ps output. Must still be running.
\n sleep 3
\ndone<\/p>\n

echo Oh, it looks like the process is done.
\nwait $my_pid
\nmy_status=$?
\necho The exit status of the process was $my_status<\/p>\n

#!\/bin\/sh<\/p>\n

cmd() { sleep 5; exit 24; }<\/p>\n

cmd & # Run the long running process
\npid=$! # Record the pid<\/p>\n

# Spawn a process that coninually reports that the command is still running
\nwhile echo “$(date): $pid is still running”; do sleep 1; done &
\nechoer=$!<\/p>\n

# Set a trap to kill the reporter when the process finishes
\ntrap ‘kill $echoer’ 0<\/p>\n

# Wait for the process to finish
\nif wait $pid; then
\n echo “cmd succeeded”
\nelse
\n echo “cmd FAILED!! (returned $?)”
\nfi<\/p>\n

#!\/bin\/bash
\n….
\ndoSomething &
\nlocal pid=$!
\nwhile [ -d \/proc\/$pid ]; do # While directory exists, the process is running
\n doSomethingElse
\n ….
\nelse # when directory is removed from \/proc, process has ended
\n wait $pid
\n local exit_status=$?
\ndone<\/p>\n

#!\/bin\/sh
\ncd \/usr\/src\/linux
\nif [ “$?” -eq “0” ]; then
\n make dep
\n if [ “$?” -eq “0” ]; then
\n make bzImage
\n if [ “$?” -eq “0” ]; then
\n make modules
\n if [ “$?” -eq “0” ]; then
\n make modules_install
\n if [ “$?” -eq “0” ]; then
\n cp arch\/i386\/boot\/bzImage \/boot\/my-new-kernel
\n if [ “$?” -eq “0” ]; then
\n cp System.map \/boot\/
\n if [ “$?” -eq “0” ]; then
\n echo “Your new kernel awaits, m’lord.”
\n fi
\n fi
\n fi
\n fi
\n fi
\n fi
\n fi
\nfi<\/p>\n","protected":false},"excerpt":{"rendered":"

if condition-integer expression expected<\/p>\n

ADV1=94.3 Quantity=96.3 if [ $Quantity -eq $ADV1 ]; then echo “quantity is greter” fi<\/p>\n

echo “” | nawk -v ADV1=94.3 -v Quantity=96.3 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3420"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3420"}],"version-history":[{"count":6,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3420\/revisions"}],"predecessor-version":[{"id":3437,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/3420\/revisions\/3437"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}