Change the $PATH

[leiz@136-25 ~]$ echo $PATH
/usr/lib64/qt-3.3/bin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr/NX/bin:/home/leiz/bin:/home/leiz/NGS/bowtie:/home/leiz/NGS/bowtie/indexes:/home/leiz/NGS/tophat:/home/leiz/NGS/samtools:/home/leiz/NGS/cufflinks

[leiz@136-25 ~]$ more .bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin:/home/leiz/NGS/bowtie:/home/leiz/NGS/bowtie/indexes:/home/leiz/NGS/tophat:/home/leiz/NGS/samtools:$HOME/NGS/cufflinks


export PATH

vi
source .bash_profile