Note to self - monitoring User Limits in GNU Linux

This came up last week, and is something that I need to keep an eye on.

These are some of the commands that one can/should use to monitor ulimit use on a Linux box: -

ps -eLf

ps -eTf

ps -Tp `pidof java`

top -H -p `pidof java`

pstree -p `pidof java`

for pid in $(pgrep java); do ls /proc/$pid/fd | wc -l; done