gen.strings.files.xz.bs

#!/bin/bash
# vim: set ts=4 sw=4 noet
#
# gen.strings.files.xz.bs
# -----------------------
# point at binary file/dev and this will run strings and compress with xz -9
#   * 'xz -9' for space + low CPU cost on decompression (CPU cost paid upfront)
#   * 'strings --radix d' so each string is prefixed with a decimal offset
#   * runs 'strings' with '-e s' then '-e l' to get 8 and 16-bit (little endian)
#   * intended for searching, e.g., 'xzgrep -F targetString strings.s.txt.xz'
#   * use decimal offset to dig through hex dumps or carve stuff in original
#
#                                   [ comments updated 2020-08-31 @anthonykava ]

if [ $# == 0 ]; then
    echo -e "\nUsage: $0 file00.bin [file01.bin ...]\n"
else
    for i in $@; do                                         # input file
        for j in s l; do                                    # do -e s, -e l
            template="strings.${j}.${i}.txt.xz"             # output file
            sfile=`echo "${template}" | sed 's/\//./g' | sed 's/\.\+/./g'`
            echo "$i ($j) => $sfile"
#           export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:/usr/local/lib"
            strings --radix=d -e $j "$i" | xz -9c -T 0 >"$sfile"
        done
    done
fi