extract a base directory from the output of ps

Vote count:

0

I am looking to extract a basedir from the output of ps -ef | grep classpath myprog.jar

root  20925 20886  1 17:41 pts/0  00:01:07 /opt/myprog/java/jre/bin -classpath myprog.jar

java is always a sub-dir under the basedir but the install path can vary from server to server e.g.

/usr/local/myprog/java/jre/bin

/opt/test/testing/myprog/java/jre/bin

So once i have my string how do I extract everything from before java until the beginning of the path ? i.e /opt/myprog

thanks

asked 1 min ago

eramm

114

1 Answer

Vote count:

0

Using grep -P:

grep -oP '\S+(?=/java)' <<< "$s"
/opt/myprog

answered 4 secs ago

anubhava

146k