vi /etc/profile
export PATH=/opt/crosstool/arm-linux/gcc-3.4.4-glibc-2.3.5/arm-linux/bin:$PATH
export PATH=/opt/wx/2.8/bin:$PATH
export MYDIR=/mnt/8182work/prefix
export QTEMB=/usr/local/Trolltech/QtEmbedded-4.6.3
export CODEDIR=/mnt/8182work/8182code/rd
source /etc/profile