to_gif

#!/bin/bash
#
# Convert image file to gif using imagemagick
#
# usage:
#   to_gif image_file [gif_file]
#
# yaswant.pradhan
# -----------------------------------------------------------------------------

[[ $# -lt 1 ]] && echo "usage: ${0##*/} image_file [gif_file]" && exit
[[ $# -lt 2 ]] && giffile="${1%.*}.gif" || giffile="$2"
[ -f "$1" ] && convert $1 -trim +repage $giffile || echo "$1 does not exist."