Convert dir structure with text files to pdf using enscript

#!/bin/bash
# REMEMBER: We must be in the correct dir!

# script will iterate through active directory and convert
# text files (php|py|js) to pdf - copying the dir structure
# postscript files reside in ../ps/ (interim, ending .ps)
# pdf reside in ../pdf/ (ending .pdf)
# depending on the amount of files it may take some time...

# requirement enscript:
if [ ! -x $(which enscript) ]; then
    echo "enscript is missing (sudo apt-get install enscript) - aborting!";
    exit 1;
fi

# requirement ps2pdf:
if [ ! - $(which ps2pdf) ]; then
    echo "ps2pdf is missing (sudo apt-get install ghostscript) - aborting!";
    exit 1;
fi

# we look for .php|.py|.js files and convert them
find . -type f \( -iname "*.php" -or -iname "*.js" -or -iname "*.py" \) -print | while read ORIGIN; do
    echo "$ORIGIN";
    BASE=${ORIGIN:1};
    PS=../ps"$BASE".ps;
    PDF=../pdf"$BASE".pdf; echo "$PDF";
    if [[ ! -d $(dirname "$PS") ]]; then mkdir -p $(dirname "$PS");fi;
    if [[ ! -d $(dirname "$PDF") ]]; then mkdir -p $(dirname "$PDF"); echo "$PDF";fi;
    enscript -o "$PS" "$ORIGIN";
    ps2pdf "$PS" "$PDF";
done
exit 0