Recursively look for files with a specific extension?

Question

I'm trying to find all files with a specific extension in a directory and its subdirectories with my bash (Latest Ubuntu LTS Release). This is what's written in a script file: #!/bin/bash directory="/home/flip/Desktop" suffix="in" browsefolders () for i in "$1"/*; do echo "dir :$directory" echo "filename: $i" # echo ${i#*.} extension=`echo "$i" | cut -d'.' -f2` echo "Erweiterung $extension" if [ -f "$i" ]; then if [ $extension == $suffix ]; then echo "$i ends with $in" else echo "$i does NOT end with $in" fi elif [ -d "$i" ]; then browsefolders "$i" fi done } browsefolders "$directory" Unfortunately, when I start this script in terminal, it says: [: 29: in: unexpected operator (with `$extension` instead of `'in'`) What's going on here, where's the error? But this curly brace

Answer 1

Why not have the "find" command do the heavy lifting for you??

For example, if I wanted to find all .java source files under a specific directory, I would execute "find" as follows:

find some/directory/path -type f -name "*.java"

This would have "find":

1) start its search at some/directory/path

2) limit its search to "regular files"

3) limit its search yet again to file names ending in ".java"

The find command's output would look something like:

workspaces_J/AlexandraK/src/finalProject/Randomizer.java

workspaces_J/AlexandraK/src/finalProject/Tester.java

workspaces_J/Bettina/src/Card.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/abc/Circle.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/abc/GeometricShape.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/abc/Rectangle.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/abc/ShapeTester.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/asserts/RadioAssertionExample.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/calc/Calculator.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/calc/DivideByZeroException.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/AmexValidator.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/BaseFormatter.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/BaseValidator.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/CCTester.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/CommonFormatter.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/CommonValidator.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/DiscoverValidator.java

workspaces_J/CSC330/src/edu/cuny/csi/csc330/ccvalidation/LuhnChecker.java