diff for directories

dirdiff

#!/bin/bash

: "
Compare files from the first to the same filename
in the second directory, if they both exist.
"

DIFF_VER=${DIFF_VER:-diff}

dir1=$1
dir2=$2

if [ -z "$dir1" -o -z "$dir2" ]; then
  echo "Usage $0 <directory1> <directory2>"
  exit 1
fi

for file in $(ls $dir1); do
    full_path1=$dir1/$file
    full_path2=$dir2/$file

    if [ ! -f "$full_path1" -o ! -f "$full_path2" ]; then
        continue
    fi

    diffout=$($DIFF_VER $DIFF_ARGS $full_path1 $full_path2)

    if [ $? -ne 0 ]; then
        echo "$DIFF_VER $full_path1 $full_path2"
        echo "$diffout"
    fi
done