CODEWITHSUNDEEP
linuxbashunix
lashgar
lashgar

Reputation: 5470

Exclude specific dir from $PATH

I've multiple MPI variations on my system. Each one is used for compile of specific application. I am looking for an script to exclude specific dir from $PATH to wrap application execution with the corresponding MPI. Is there any simple way to do so?

Upvotes: 2

Views: 1353

Answers (1)

gvalkov
gvalkov

Reputation: 4107

Perhaps something along the lines of:

with-excluded-path () {      
    echo "$PATH" | sed "s,$1:,,g"
}

or 

with-excluded-path () {
    echo "$PATH" | awk -vORS=":" -vRS=":" '$1 == "'$1'" { next }; {print $1}'
}

PATH=$(with-excluded-path "/path/to/exclude") /bin/application

Or simply add the desired MPI path to the head of PATH:

export PATH="/opt/the/mpi/i/want:$PATH"

Upvotes: 8

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