Regular expresion to catch file name and replace it with specific characters-CodePudding

I need help in a specific problem.

I have a relative Path in a Flutter project, and I need to get the file name (without .dart extension) and adding two asterisks before that.

I need to create a shell script to execute in my PC like this:

EJ.

prueba/de/una/ruta/main.dart

prueba/de/una/ruta/**.dart

----

Actually I'm trying something like get the file name and replace it with this code but is not working

echo "test/holas.dart" | sed "/(?<=\/)[^\/] (?=\.dart)/g";

Actual output:

test/holas.dart

Expected output:

holas

If someone know something to get the expected output or how to build the entire Script file i appreciate help

CodePudding user response：

Using sed

$ echo 'prueba/de/una/ruta/main.dart' | sed -E 's~(.*/)[^.]*~\1**~'
prueba/de/una/ruta/**.dart

$ echo "test/holas.dart" | sed -E 's~.*/|\..*~~g'
holas