Substitute contents and names of given files

customize

#!/usr/bin/env bash
# customize -- Substitute contents and names of given files
# 
# Usage:
#   customize DEST [FILE...] <<RULES
#   Name=Foo
#   Version=1.0
#   RULES
# 
#
# Author: Jaeho Shin <netj@sparcs.org>
# Created: 2009-12-18
set -e

Dest=$1; shift || { sed -n "2,/^#$/s/^# //p" <"$0"; exit; }

[ $# -gt 0 ] || set -- *

# prepare substitutions
subst=`sed 's/:/\\\\:/g;  s/^/s:/; s/=/:/; s/$/:g/'`

# customize by substituting everything here
find "$@" -type f |
while read -r f; do
    [ -e "$f" ] || continue
    # customize name
    g=`sed "$subst" <<<"$f"`
    h="$Dest/$g"
    d=`dirname "$h"`
    [ -d "$d" ] || mkdir -p "$d"
    # customize contents
    sed "$subst" <"$f" >"$h"
    ! [ -x "$f" ] || chmod +x "$h"
done