#! /bin/bash

# Quick and dirty script that's useful if files were copied from a drive
# that was mounted with the incorrect permissions etc.

# Given a dir as an arg, recursively set all file and dir permissions to
# these defaults: -rw-r--r-- , drwxr-xr-x. Note that there is no recursion
# limit imposed, so use with caution.

DIR=755
FILE=644
USAGE="\nUsage:  ./fix-permissions.sh <base-directory>"

rec(){
  cd "$1"
  for x in *; do
    if [ -d "$x" ]; then
      chmod $DIR "$x"
      rec "$x"
      cd ..
    elif [ -f "$x" ]; then
      chmod $FILE "$x"
    fi
  done
}

if [ -d "$1" ]; then
  echo "Setting permissions of \"$1\" and its subdirectories to $DIR, and"
  echo "those of the files they contain to $FILE."
  chmod $DIR "$1"
  rec "$1"
else
  >&2 echo -e "\"$1\" is not a directory or does not exist. $USAGE"
  exit 1
fi