Simple Tweaks in UNIX

To compress a file or folder do this command:
in this example, i want to tar and untar my web directory:

tar -pczf web.tar.gz web/
tar xvfz web.tar.gz

Getting the Children from the parents: (Process)

pkill -P `pgrep -P $$`

Recursive file search
Best Link for file search

Total disk status:
df -kh .

Individual file info
du -sh *
Entire file info:
du -sh .