Question

6

Is there a way to shorten(not remove) the path displayed in the terminal by an alias

rated 0 times [ 6] [ 0] / answers: 1 / hits: 760 / 2 Years ago, mon, december 13, 2021, 1:47:32

I want something like this:

"vivek@grishma:~/xxx/yyy/zzz/src$" to be shown as

"vivek@grishma:datasource$" where I would somehow have predefined "datasource" to be an alias for the long path above.

using the alias command as

" alias datasource='~/xxx/yyy/zzz/src'"

is useful for navigation but it does not take out the long path in the prompt.

Is this possible?

PS- I dont want it to be just "vivek@grishma:" as then each time I should run pwd to know my working directory.

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ionash

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4 Years ago

answered 2 Years ago lintical · Accepted Answer

This will do:

PS1='u@h:$(

    case $PWD in

       $HOME/xxx/yyy/zzz/src) echo "datasource ;; 

       *) echo "w" ;; 

    esac

)$'

That gives you the flexibility to define other special directories as well.

Aliases won't help you here.

To reduce duplication, put all your special dirs in an array, and use that to generate your aliases and also your prompt. Put all this in your ~/.bashrc:

declare -A labels=(

    [$HOME/xxx/yyy/zzz/src]=datasource

    [$HOME/foo/bar]=baz

)

for path in "${!labels[@]}"; do

    alias "${labels[$path]}"="$path"

done

function path_label () {

    local IFS=:

    if [[ ":${!labels[*]}:" == *:"$PWD":* ]]; then

        # we're in a "known" dir

        echo "${labels[$PWD]}"

    else

        return 1

    fi

}

PS1='u@h:$( path_label || echo "w" )$'