How to install arm v6 compiler?

1. decompress the armv6.tar.gz under /opt
2. its directory name is armv6

tar xvjf armv6_codesourcery.tar.bz2 -C /opt/

# su account
$ vi ~/.bash_profile
export PATH=/opt/armv6/codesourcery/bin:$PATH

$reboot
# arm-none-linux-gnueabi-gcc -v ( confirm the version number )

in ubuntu
cat > ~/.bash_profile
PATH=$HOME:/opt/armv6/codesourcery/bin:$PATH
export PATH
ctrl+D