Find-Extract files from zip archives

find-images

#!/usr/bin/bash

# author Branchito

# Usage
# This script takes filenames as arguments, as many as you wish
# and then searches through all .zip archives for those filenames
# and extracts them

# if you do not wish to specify args manually on the command line
# call script this way..
# ./find-images $(< filelist), 
# where filelist is a file, containing list of files, each on
# a separate line.

# No zero args allowed.
if [ $# -eq 0 ]
then
	echo "Usage: `basename $0` arg1 [ arg2, ... ]"
	exit  0
fi

# No empty args allowed
if [ -z "$1" ]
then
	echo "Argument cannot be empty!"
	exit 89
fi

# all OK, so continue

while :
do

	echo -n "Enter a directory name to store files in: "
	read dirname junk
	[[ ! -z $dirname ]] && break
done

# if dir exists do not make one, but continue extracting files into it.
[[ ! -d "$dirname" ]] && mkdir "$dirname"

for var in "$@"
do
	for f in *.zip
	do
		# check if file exists, if not then extract
		# so only the first instance of found file will be extracted

		# you may use one of these to change behaviour of unzip 
		# if desired, but in second instance bellow, after grep
		# because that's what actually does the work.

		# -n never overwrite existing files
		# -o overwrite files WITHOUT prompting
		# -j junk paths (do not make directories)
		# -C match filenames case-insensitively
		# -q quiet mode ( -qq => quieter )
		# ..see unzip --help for more.

		# By DEFAULT this script uses case insensitvity.
		# Remove -C option from bellow line, to change that.
		[[ ! -e "$dirname/$var" ]] && unzip -l $f | grep -iq "$var" && unzip -C $f "$var" -d $dirname
	done
done