Getting the command line of a running process in Linux is usually easy, just run the "ps -ef"
command, but what if the command line used to start a process is very long? It gets a little more difficult. This is the problem I ran into recently when trying to get all the arguments used to start a WebLogic managed server. The ps
command was only displaying the first 4096 characters of the command line.
The same 4096 character limit is present if you cat the /proc/<PID>/cmdline
file for your process.
Luckily the JDK has a solution for us. The jinfo
command can be used to extract the full command line (minus the executable path) for the JVM process...
Nice and easy!
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Although I put in a great effort into researching all the topics I cover, mistakes can happen.
If you spot something out of place, please do let me know.
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