Aide Memoire - Commands for Linux, WebSphere Application Server and IBM HTTP Server ibm application blogger java linux network password server websphere xml

or, more specifically, this post.

Find the process that uses most CPU

ps -eo pcpu,pid,user,args | sort -k 1 -r | head -2

Find the last 10 process that use the most CPU

ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10

Find cpu usage

mpstat -P ALL

Display the size of the current directory, plus all subdirectories

du -ch | grep total

Domain Information Groper (DIG) - look at DNS etc.

dig <hostname or IP address>

Get details of a network adapter

/usr/sbin/ethtool eth0

Find occurrences of strings in files AND report file names

find . -name '*.xml' -print | xargs grep 'hostName' /dev/null

Find files over a certain size e.g. 10K

find / -xdev -size +1024 -exec ls -al {} ; | sort -r -k 5

Find and tar files on the fly

find /opt/IBM/WebSphere/PortalServer/log -name 'System*.log'| xargs tar -rvf System_logs.tar

Output wsadmin to console AND file

/opt/IBM/WebSphere/wp_profile/bin/wsadmin.sh -lang jython | tee wsadmin.log

Find files touched in, say, the past 20 minutes

find * -mmin -20

Run a command on a loop

watch -d=10 -n 1 "netstat -a"

Show expiry of WAS SSL key and trust stores ( assuming that password is still WebAS )

find /opt/IBM/WebSphere/wp_profile -name *.jks | xargs -i bash -c '/opt/IBM/WebSphere/AppServer/java/bin/java -classpath /opt/IBM/WebSphere/AppServer/java/jre/lib/ext/ibmjceprovider.jar:/opt/IBM/WebSphere/AppServer/java/jre/lib/ext/ibmjcefw.jar:/opt/IBM/WebSphere/AppServer/java/jre/lib/ext/US_export_policy.jar:/opt/IBM/WebSphere/AppServer//java/jre/lib/ext/local_policy.jar:/opt/IBM/WebSphere/AppServer/java/jre/lib/ext/ibmpkcs.jar:/opt/IBM/WebSphere/AppServer/java/jre/lib/ext com.ibm.gsk.ikeyman.ikeycmd -cert -list all -expiry -db {} -type jks -pw WebAS'

Show expiry of IHS SSL key and trust stores ( assuming that password is still WebAS )

find /opt/IBM/HTTPServer -name *.kdb | xargs -i bash -c '/opt/IBM/HTTPServer/Plugins/java/jre/bin/java -classpath /opt/IBM/HTTPServer/Plugins/java/jre/lib/ext/ibmjceprovider.jar:/opt/IBM/HTTPServer/java/jre/lib/ext/ibmjcefw.jar:/opt/IBM/HTTPServer/Plugins/java/jre/lib/ext/US_export_policy.jar:/opt/IBM/HTTPServer/Plugins//java/jre/lib/ext/local_policy.jar:/opt/IBM/HTTPServer/Plugins/java/jre/lib/ext/ibmpkcs.jar:/opt/IBM/HTTPServer/Plugins/java/jre/lib/ext com.ibm.gsk.ikeyman.ikeycmd -cert -list all -expiry -db {} -type cms -pw WebAS '