Grep for a specific string

luser9999 used Ask the Experts™

on 2011-05-17

Linux

Hi,

I have many tomcat instances are running on Linux server and I would like to grep them based on a string called "catalina.base" here is one example

root 27180 1 0 Feb25 ? 00:02:10 /opt/java/jdk1.5.0_16//bin/java -Djava.util.logging.config.file=/opt/net/crowd-2.0.3/apache-tomcat/conf/logging.properties -Xms128m -Xmx256m -XX:MaxPermSize=256m -Dfile.encoding=UTF-8 -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/net/crowd-2.0.3/apache-tomcat/endorsed -classpath :/opt/net/crowd-2.0.3/apache-tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/net/crowd-2.0.3/apache-tomcat -Dcatalina.home=/opt/net/crowd-2.0.3/apache-tomcat -Djava.io.tmpdir=/opt/net/crowd-2.0.3/apache-tomcat/temp org.apache.catalina.startup.Bootstrap start

So when i " ps -ef | grep java" --> will return all the instances of java and out of which I need only the string value "-Dcatalina.base="

to make it clear my search out put should be,

-Dcatalina.base=/opt/net/crowd-2.0.3/apache-tomcat
-Dcatalina.base=/opt/test/tomcat-2.0.3/apache-tomcat
-Dcatalina.base=/opt/test123/staging/apache-tomcat
-Dcatalina.base=/home/catalina/catalina-2.0/apache-tomcat

thanks

View Solution Only

farzanj

Verified Expert

Commented: 2011-05-17

ps -ef | grep java" | sed 's/.*$-Dcatalina.base=.*$/\1/'

woolmilkporc

Trusted Expert

Most Valuable Expert 2013

Top Expert 2013

ps -ef | awk '{FS="-Dcatalina.base" ; /catalina.base/ ;print FS $2}' | cut -f1 -d" "

ps -ef | grep java" | sed 's/.*$-Dcatalina.base=.*apache-tomcat$.*/\1/'

upanwar

ps -ef | grep -o "-Dcatalina.base=/opt/net/crowd-2.0.3/apache-tomcat"

This should work.

Sorry for above comment, It could work on a file only.

ps -ef | grep "java" | sed 's/.*$-Dcatalina.base=.*apache-tomcat$.*/\1/'

Uneven quotes in last post

luser9999

Author

Sorry guys, executed and none of these are working except for woolmilkporc: where I get only three matches and reaming are

-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
like many... I actually have 22 instances are running.

thanks for helping

"grep -o is not quite bad:

ps -ef grep -o -e "-Dcatalina\.base.*" | cut -f1 -d" "

sorry, I got all 22 after using woolmilkporc: command but remaining are
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base
-Dcatalina.base

can we remove these lines?
thanks

Yes, that's right.

Try this:

ps -ef | grep "catalina.base" | awk '{FS="-Dcatalina.base" ; print FS $2}' | cut -f1 -d" "

... or the "grep -o" thing, but with a pipe this time:

ps -ef |grep -o -e "-Dcatalina\.base.*" | cut -f1 -d" "

thanks

ps -o -e worked like charm

thanks man

Grep for a specific string

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