$ find ~ -user quanta -not \( -group quanta \) -exec sudo chgrp -R quanta "{}" \;

logsave [ -asv ] log-file command

$man 8 logsave

find / | grep -v -e ^/proc/ -e ^/tmp/ -e ^/dev/ > preinstall.list

find / | grep -v -e ^/proc/ -e ^/tmp/ -e ^/dev/ > postinstall.list

diff preinstall.list postinstall.list > installed.list

head option filename

head -n 10 filename

$ vol_id /dev/sda5
ID_FS_USAGE=filesystem
ID_FS_TYPE=ntfs
ID_FS_VERSION=3.1
ID_FS_UUID=01C998ED00829A00
ID_FS_UUID_ENC=01C998ED00829A00
ID_FS_LABEL=QUANTA
ID_FS_LABEL_ENC=QUANTA

$ blkid 
/dev/sda1: UUID="785C40EA5C40A4AA" LABEL="SERVICEV002" TYPE="ntfs" 
/dev/sda2: UUID="01C998ECFFEA0380" LABEL="WIN2K3" TYPE="ntfs" 
/dev/sda3: UUID="e1b46788-14df-4d8c-84d5-00f9a32698a1" TYPE="ext3" 
/dev/sda5: UUID="01C998ED00829A00" LABEL="QUANTA" TYPE="ntfs" 
/dev/sda6: TYPE="swap" UUID="a4e3113e-cbeb-4d41-8327-577af36db2e4"

$ ls -l /dev/disk/by-uuid/
total 0
lrwxrwxrwx 1 root root 10 2009-06-15 17:17 01C998ECFFEA0380 -> ../../sda2
lrwxrwxrwx 1 root root 10 2009-06-15 17:17 01C998ED00829A00 -> ../../sda5
lrwxrwxrwx 1 root root 10 2009-06-15 17:17 785C40EA5C40A4AA -> ../../sda1
lrwxrwxrwx 1 root root 10 2009-06-15 17:17 a4e3113e-cbeb-4d41-8327-577af36db2e4 -> ../../sda6
lrwxrwxrwx 1 root root 10 2009-06-15 17:17 e1b46788-14df-4d8c-84d5-00f9a32698a1 -> ../../sda3

$ shopt -s
cmdhist        	on
expand_aliases 	on
extquote       	on
force_fignore  	on
hostcomplete   	on
interactive_comments	on
progcomp       	on
promptvars     	on
sourcepath     	on

$ shopt -s cdspell
bash-3.1$ cd /mnt/data/linuz
/mnt/data/linux
bash-3.1$ pwd
/mnt/data/linux

$ shopt -s dotglob

$ shopt -s histappend

$ bind "set completion-ignore-case on"
bash-3.1$ shopt -s nocaseglob
bash-3.1$ cd /mnt/data/hv[TAB]
bash-3.1$ pwd
/mnt/data/HVA

$ ls -la
total 514216
drwxrwxrwx 1 root root      4096 2009-07-27 00:02 .
drwxrwxrwx 1 root root     49152 2009-07-26 10:05 ..
-rwxrwxrwx 1 root root         0 2009-07-26 23:47 .file
drwxrwxrwx 1 root root         0 2009-07-26 23:47 .test
-rwxrwxrwx 1 root root 526501693 2008-08-17 04:39 FaceOff [1997]-Salman.mkv
bash-3.1$ shopt -s extglob
bash-3.1$ rm -fr !(FaceOff\ \[1997\]-Salman.mkv )
bash-3.1$ ls -la
total 52
drwxrwxrwx 1 root root  4096 2009-07-27 00:04 .
drwxrwxrwx 1 root root 49152 2009-07-26 10:05 ..

mencoder -endpos hh0:mm0:ss0 -oac copy -ovc copy in.avi -o part1.avi
mencoder -ss hh0:mm0:ss0 -oac copy -ovc copy in.avi -o tmp.avi

mencoder -endpos hh1:mm1:ss1 -oac copy -ovc copy tmp.avi -o part2.avi
mencoder -ss hh1:mm1:ss1 -oac copy -ovc copy tmp.avi -o part3.avi

mencoder -oac copy -ovc lavc -vf rotate=1 part2.avi -o part2_rotated90.avi

mencoder part2_rotated90.avi -oac copy -ovc lavc -vf scale=A:(A*A/B) -o part2_zoomin.avi

mencoder part2_zoomin.avi -oac copy -ovc lavc -vf crop=A:B -o part2_final.avi

mencoder -forceidx -oac copy -ovc lavc part1.avi part2_final.avi part3.avi -o final_out.avi

# shutdown -P 0

Display Current Config for all NIC's: ifconfig
Display Current Config for eth0: ifconfig eth0
Assign IP: ifconfig eth0 192.168.1.2
Ping: ping -c 3 192.168.1.1
Assign multiple IP's: ifconfig eth0:0 192.168.1.2
Assign second IP: ifconfig eth0:1 192.168.1.3
Disable network card: ifconfig eth0 down
Enable network card: ifconfig eth0 up
View current routing table: route "or" route -n
View arp cache: arp "or" arp -n
Assign IP/Subnet: ifconfig eth0 192.168.1.2 netmask 255.255.255.0
Assign Default Gateway: route add default gw 192.168.1.1
Trace Route: traceroute www.whatismyip.com
Trace Path: tracepath www.whatismyip.com
DNS Test: host www.whatismyip.com
Advanced DNS Test: dig www.whatismyip.com
Reverse Lookup: host 66.11.119.69
Advanced Reverse Lookup: dig -x 66.11.119.69

Display Current Config for all NIC's: ifconfig
Display Current Config for dc0: ifconfig dc0
Assign multiple IP's: ifconfig dc0:0 192.168.1.2
Assign second IP: ifconfig dc0:1 192.168.1.3
Disable network card: ifconfig dc0 down
Enable network card: ifconfig dc0 up
Assign IP/Subnet: ifconfig dc0 inet 192.168.1.2 netmask 255.255.255.0
Assign Gateway: route delete default && route add default 192.168.1.1

complete -W "$(ls /etc/init.d/)" service

complete -W "$(ls /etc/init.d/)" chkconfig

ps -eo size,args | grep httpd | grep -v grep | awk '{mem += $1} END {print mem}'

# pmap `pidof httpd` | tail -1
 total           224900K

$ vlock

$ vlock -a

$ sudo /etc/rc.d/kdm start

#!/usr/bin/expect

log_user 0
set username [lrange $argv 0 0]
set password [lrange $argv 1 1]

if {$argc != 2} {
	puts "Usage: openvpn_start.expect <username> <password>"
	exit 1
} else {
	spawn /usr/sbin/openvpn /path/to/client.ovpn
	expect "Enter Auth Username:"
	send -- "$username\r"
	expect "Enter Auth Password:"
	send -- "$password\r"
	}
expect eof

sshfs 192.168.1.17:/u01/core /root/test

sshfs#192.168.1.17:/u01/core  1000G     0 1000G   0% /root/test