capture a word from the output
 

Hi,

I am trying to catch a value of a variable from a java process from command-line on linux. I search for a process using 'ps -ef' command and get a output like

=======================================================
500 7581 5520 0 00:36 ? 00:00:20 /usr/java/jdk1.6.0_34/jre/bin/java -Xrs -cp ":/foo/barr//bpmengine/bpmengine.jar:/foo/barr//dbconnection/dbconnection.jar:/foo/barr//coboc/coboc.jar:/foo/barr//wsappserver/wsappserver.jar:/foo/barr//scheduler/scheduler.jar:/foo/barr//datamapper/datatransform.jar:/foo/barr//datamapper/binarytransform.jar:/foo/barr//ruleengine/ruleengine.jar:/foo/barr//expressioneval/expressioneval.jar:/foo/barr//audit/auditartifactapi.jar:/foo/barr//audit/auditartifact.jar:/foo/barr//statemachine/statemachine.jar:/opt/abcd/defaultInst/ext/xbean.jar:/foo/barr//bpmengine/dom4j.jar:/foo/barr//bpmengine/geronimo-stax.jar:/foo/barr//bpmengine/poi-ooxml.jar:/foo/barr//bpmengine/poi-ooxml-schemas.jar:/foo/barr//search/poi-3.6-20091214.jar:/foo/barr//bpmengine/bpmengine.jar:/foo/barr//dbconnection/dbconnection.jar:/foo/barr//dbconnectors/dbconnectors.jar:/foo/barr//coboc/coboc.jar:/opt/abcd/defaultInst/ext/xbean.jar:/foo/barr//bpmengine/dom4j.jar:/foo/barr//bpmengine/geronimo-stax.jar:/foo/barr//bpmengine/poi-ooxml.jar:/foo/barr//bpmengine/poi-ooxml-schemas.jar:/foo/barr//search/poi-3.6-20091214.jar:/opt/abcd/defaultInst/abcdcp.jar:/opt/abcd/defaultInst/abcdcp.jar:/usr/lib/mysql-connector-java-5.1.12-bin.jar:/usr/lib/mysql-connector-java-5.1.12-bin.jar::/usr/lib/mysql-connector-java-5.1.21-bin.jar::" -DProcessName=App1 -XX:PermSize=5m -Xmx512M -Dabcd_INSTALL_DIR=/opt/abcd/defaultInst com.eibus.soap.Processor -binary -name 34:115:121:115:116:101:109:35:98:117:115:105:110:101:115:115:95:112:114:111:99:101:115:115:95:109:97 :110:97:103:101:109:101:110:116:35:98:117:115:105:110:101:115:115:95:112:114:111:99:101:115:115:95:1 09:97:110:97:103:101:109:101:110:116:34:
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In the above output, there is a string called "-DProcessName=App1". the value of the variable "DProcessName" keeps changing. I want to capture the value of the processname only. please notice that the ouput of 'ps -ef' command always is in a single line.

Please help in finding a solution.

grep -o would probably help in this instance.

Hi,

grep -o option is not helping in this case, for example, If I give, grep -o ProcessName, only ProcessName will be the output, not its value.

grep -o ProcessName.*" "; maybe awk/sed/cut would fit better. you have many options.

In your example, the value of '-DProcessName' is 'App1'.
If you are sure that there will be no space between your values and output of 'ps -ef' is printed in one line like you have put in your post then following command can work for you.
The command will not print the text after first space of value of '-DProcessName'

Generally 'ps -ef' command's out put looks like this.
It is appeared in columns.
If you want to make appeared your value through this output, you can use 'cut' command here.

More concisely:

Thank you
 

Hi All,

Thank you all for the help. I am very bad at working with regular expressions. I will start working on it.