Shell Index Page 1

Bash: How to Check if a directory exists?

If you need to check if directory exists use: if [ -d "$DIR" ];. Check here for details when you have symbolic links.

Shell Index Page 1

How can I concatenate strings in Bash?

Check here some string concatenation examples using bash. Lean how to program bash and manipulate strings, in this case using concatenation. We propose different approaches to solve the problem with bash.

Shell Index Page 1

How to Call an external command with Python?

We show how to use python to call an external program or command. We show examples with python 2 and 3