Is it possible to execute shell script in command line like this :
counter=`ps -ef | grep -c "myApplication"`; if [ $counter -eq 1 ] then; echo "true";
>
Above example is not working I get only > character not the result I'm trying to get, that is "true"
When I execute ps -ef | grep -c "myApplication I get 1 output. Is it possible to create result from single line in a script ? thank you
Answer
It doesn't work because you missed out fi to end your if statement.
counter=`ps -ef | grep -c "myApplication"`; if [ $counter -eq 1 ]; then echo "true"; fi
You can shorten it further using:
if [ $(ps -ef | grep -c "myApplication") -eq 1 ]; then echo "true"; fi
Also, do take note the issue of ps -ef | grep ... matching itself as mentioned in @DigitalRoss' answer.
update
In fact, you can do one better by using pgrep:
if [ $(pgrep -c "myApplication") -eq 1 ]; then echo "true"; fi