Customizing the output of `ps`
There's a lot to know about processes, although typically we're looking for a mapping of pids to commands.
You can customize the output of ps with -o. The -o flag expects a comma
separated list of keywords which indicate the columns that you'd like to
display for each process.
> ps -o pid,command
The above command shows only the pid and the command w/args for each process.
You can see all the possible keywords with ps -L.