Linux Commands
Disk Usage: du Display directory listing showing directory size:
du -h --max-depth=1
To change run level at boot edit:
/etc/inittab
find . -name "rc.conf" -print
Useful command line tools:
grep find cut sort uniq less head tail xargs
Sort by numbers, see man sort:
sort -n
To tail a log file but you want to exclude certain lines:
tail -fn100 /var/logs/somefile.log | grep -v ignored
See also: http://www.athabascau.ca/html/depts/compserv/webunit/HOWTO/find.htm
