ulimit is a utility tool to set a limitation of user process. For example, you can set the maximum core file size by using
ulimit -c command.
# It sets the max number of blocks used for core file. $ ulimit -c 100000
ulimit does not show the information of other process. You can check the resource limitation of arbitrary process by using
/proc file system.
$ cat /proc/$PID/limits Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max core file size 0 unlimited bytes ...