you can't change some language setting and your script's echo commands will magically be another language.
you can do one of the following:
- source a language file.
- create a bash script that converts the original bash script.
- create a function in the bash script that translates the output.
As you're not keen on the dict solution as it's too google translatey... I'll bet sourcing would be a good solution for you.
a simple example would be;
FILEMISSING="That file is missing..."
FILEMISSING="Ce fichier est manquant..."
if [ ! -f "bob.txt" ]; then