How do I manipulate $PATH elements in shell scripts?

Question

Is there a idiomatic way of removing elements from PATH-like shell variables?

That is I want to take

PATH=/home/joe/bin:/usr/local/bin:/usr/bin:/bin:         


        

Answer 1

suppose

echo $PATH
/usr/lib/jvm/java-1.6.0/bin:lib/jvm/java-1.6.0/bin/:/lib/jvm/java-1.6.0/bin/:/usr/lib/qt-3.3/bin:/usr/lib/ccache:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/tvnadeesh/bin

If you want to remove /lib/jvm/java-1.6.0/bin/ do like as below

export PATH=$(echo $PATH | sed  's/\/lib\/jvm\/java-1.6.0\/bin\/://g')

sed will take input from echo $PATH and replace /lib/jvm/java-1.6.0/bin/: with empty

in this way you can remove