add user

adduser mynewuser

sudo visudo

root    ALL=(ALL:ALL) ALL
newuser ALL=(ALL:ALL) ALL

gistfile1.txt

uname -a for all info regarding kernel version,

uname -r for exact kernel version

lsb_release -afor all information related to ubuntu version,

lsb_release -r for exact version

sudo fdisk -l for partition info with all details.

rsync -arv --exclude=.ccache --exclude=build /home/ben /media/ben/thumbdrive/

http://www.tecmint.com/rsync-local-remote-file-synchronization-commands/

Linux Command Note

## find out mount/partition a directory or file is on?
df -P file/goes/here | tail -1 | cut -d' ' -f 1

# delete line 135 in file, and save origin file into file.bak
sed -i.bak -e '135d' file

# Recursive find string from files
grep -R -i -n '<string>' <directory>

# nohup
nohup your_command &>myout.txt &
tail –f nohup.txt

# kill process listening on port 23456
sudo kill -9 `sudo lsof -t -i:23456`