Bash: convert subtitles files into unicode

convert_subtitles.sh

#!/bin/bash

# Usage:
# copy this script into the folder with subtitles files
# 
#   chmod +x convert_subtitles.sh
#   ./convert_subtitles.sh *.srt

backup="backup_cp1251_srt/";

if [ $# -eq 0 ]; then
    echo "Give some input files";
else
    `mkdir -p $backup`;
    for arg in $@; do
        `cp $arg $backup`;
        `iconv -f windows-1251 -t utf-8 $arg > _tmp.srt`;
        `mv _tmp.srt $arg`;
    done;
fi;