feat: add lzipgrep tool to filter LZip files

files/usr/local/bin/lzipgrep

+#!/usr/bin/env bash
+# Filter lzip files.
+
+# Copyright (C) 1998, 2002, 2006-2007, 2010-2018 Free Software Foundation, Inc.
+
+# 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 3 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, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+version="lzipgrep (lzip)
+Copyright (C) 2007, 2011-2017 Free Software Foundation, Inc.
+This is free software.  You may redistribute copies of it under the terms of
+the GNU General Public License <https://www.gnu.org/licenses/gpl.html>.
+There is NO WARRANTY, to the extent permitted by law.
+
+Written 2021 by Jörg Sachse based on Andreas Romeyke's lzipcat."
+
+usage="Usage: $0 [PATTERN] [FILENAME.lz]
+
+Report bugs to <langzeitarchiv@slub-dresden.de>."
+case $1 in
+--help)    printf '%s\n' "$usage"   || exit 1; exit;;
+--version) printf '%s\n' "$version" || exit 1; exit;;
+esac
+
+if [[ -e "${2}" && -f "${2}" ]]; then
+	exec lzip --decompress --threads $( nproc --all ) --stdout "${2}" | grep --color "${1}"
+fi