a work-in-progress configure script for my shell games

configure.sh

#!/bin/bash -
#
# SCRIPT: configure
# AUTHOR: Luciano D. Cecere
# YEAR: 2015
########################################################################
#
# configure - generate install, uninstall and clean scripts for programs
#
# Copyright (C) 2015 Luciano D. Cecere <[email protected]>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
########################################################################

### TODO/BUGS ###
# If there are files in the topdir named install, uninstall or clean,
# this script over-writes those files. I need create more unique
# filenames.

# Multiple files with the same name cause problems. If there are 2 files
# with the same name, the second file will have the symlink installed.

# I need a routine that searches for manual files and another to install
# them.

# I should throw in some command-line flags for information and flags for
# specifying the target (topdir) directory from the command-line.

################

export PATH=/bin:/usr/bin
unalias -a

origin="${PWD}/games"

dest="${1:-/usr/local/games}"

if [ ! -d "$dest" ]; then 
  echo "$dest is not a directory"
  exit 1
fi

dir=( $(ls -R "${origin}" | grep './' | tr -d ":") )
progs=()

for i in ${dir[@]}
do
  cd "$i"
  for f in *
  do
    if [ -x "$f" ] && [ ! -d "$f" ] && [ "$f" != "Makefile" ]; then
       progs+=("$i/$f")
    fi
  done
  cd - >/dev/null
done

> install
> uninstall
> clean

cat > install <<-eof
	#!/bin/bash
	# This file was created by ${0##*/}

	sudo id >/dev/null # Trigger sudo password

	_link()
	{
	    dest=$dest
	    stack+=( "\$@" )

	    for i in \${stack[@]}
	    do
	      p="\${i##*/}"
	      p="\${p%%.*}"
	      echo "linking \${i} to \${dest}/\${p}"
	      sudo ln -fs "\${i}" "\${dest}"/"\${p}"
	    done
	}

	echo Installing programs to $dest
	_link \\
eof

cat > uninstall <<-eof
	#!/bin/bash
	# This file was created by ${0##*/}

	sudo id >/dev/null # Trigger sudo password

	echo Removing progs from $dest
	sudo rm -v \\
eof

cat > clean <<-eof
	#!/bin/bash
	# This file was created by ${0##*/}

	[ -e install ] & rm -v install
	[ -e uninstall ] & rm -v uninstall
	[ -e clean ] & rm -v clean
	echo ...done
eof

for ((i=0; i<${#progs[@]}; i++))
do
  p="${progs[i]}"
  p="${p##*/}"
  p="${p%%.*}"

  if [ $i -eq $((${#progs[@]}-1)) ]; then
    echo "${progs[i]}" >> install
    echo "${dest}/${p}" >> uninstall
  else
    echo "${progs[i]} \\" >> install
    echo "${dest}/${p} \\" >> uninstall
  fi
done

echo 'echo ...done' >> install
echo 'echo ...done' >> uninstall

chmod +x install
chmod +x uninstall
chmod +x clean

cat <<-eof

	Scripts created: install, uninstall, clean

	run ./install to install symlinks to $dest
	run ./uninstall to uninstall symlinks from $dest
	run ./clean to remove these three files

eof