change-jpg-file-names.sh - Change jpg filenames using exif:DateTime

change-jpg-file-names

#!/bin/sh

PROGNAME=$(basename $0)
VERSION="0.3"

usage() {
    echo "Usage: $PROGNAME [OPTIONS]"
    echo
    echo "Options:"
    echo "  -h, --help    help"
    echo "  -V, --version version"
    echo "  -x, --exec    execute"
    echo
    exit 1
}

execmode=0

for OPT in "$@"
do
    case "$OPT" in
        '-h'|'--help' )
            usage
            exit 1
            ;;
        '-V'|'--version' )
            echo "$PROGNAME Version $VERSION"
            exit 1
            ;;
        '-x'|'--exec' )
            execmode=1
            shift 1
            ;;
        -*)
            echo "$PROGNAME: illegal option -- '$(echo $1 | sed 's/^-*//')'" 1>&2
            exit 1
            ;;
        *)
            echo "$PROGNAME: illegal parameter -- '$(echo $1 | sed 's/^-*//')'" 1>&2
            exit 1
            ;;
    esac
done

if [ $execmode = 0 ]
then echo '#### Not execution, just only print commands ####'
fi

n='(initial)'
c=0
for f in `ls -1 IMG_*.JPG`
do
  p=$n
  n=`identify -verbose $f | grep exif:DateTime: | sed 's/ *exif:DateTime: *\([0-9]\{4\}\):\([0-9]\{2\}\):\([0-9]\{2\}\).*$/\1\2\3/'`
  if [ $n = $p ]
  then c=`expr $c + 1`
  else c=1
  fi
  if [ $execmode = 1 ]
  then mv -v -i -b $f ${n}_`printf "%02d" ${c}`.JPG
  else echo mv -v -i -b $f ${n}_`printf "%02d" ${c}`.JPG
  fi
done