Edit PATH variable in a shell script to remove specific enteries

Question

I want to remove from the path environment variable all of the enteries that contain a certain word, how can I do that?

Answer 1

export PATH=$(echo $PATH | awk -F : 'BEGIN{ORS=":"}{for (i=1;i<=NF;i++) if ($i !~ /local/) print $i}' | sed 's/.$//')

Will exclude all the $PATH entries which contain the word "local".

Answer 2

With zsh, where $PATH is mapped to the $path array like in csh:

path=( ${path:#*word*} )