#!/bin/bash true <<'EOF'

This script downloads the latest version of GNU Parallel, checks the signature and installs it.

It first tries to install it globally.
If that fails, it does a personal installation.
If that fails, it copies to $HOME/bin

You can download and run the script directly by:

$ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) > install.sh
$ sha1sum install.sh | grep 12345678
$ md5sum install.sh
$ sha512sum install.sh

Check the sums from https://gnu.org/s/parallel/checksums
Then run:

$ bash install.sh

EOF # SPDX-FileCopyrightText: 2013-2022 Ole Tange, http://ole.tange.dk and Free Software and Foundation, Inc. # # SPDX-License-Identifier: GPL-3.0-or-later # # 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. run() { # FreeBSD prefers 'fetch', MacOS prefers 'curl', Linux prefers 'wget' get=$( (lynx -source /dev/null && echo lynx -source) || (fetch -o /dev/null file:///bin/sh && echo fetch -o -) || (curl -h >/dev/null && echo curl -L) || (wget -h >/dev/null && echo wget -qO -) || echo 'No lynx, wget, curl, fetch: Please inform parallel@gnu.org what you use for downloading URLs' >&2 ) if test "$get" = ""; then exit 1 fi if ! perl -e 1; then echo No perl installed. GNU Parallel depends on perl. Install perl and retry. exit 1 fi LANG=C latest=$($get http://ftpmirror.gnu.org/parallel | perl -ne '/.*(parallel-\d{8})/ and print $1."\n"' | perl -e 'print ((reverse sort <>)[0])') if test \! -e "$latest".tar.bz2; then # Source tar does not exist rm -f "$latest".tar.bz2 "$latest".tar.bz2.sig $get http://ftpmirror.gnu.org/parallel/"$latest".tar.bz2 > "$latest".tar.bz2 $get http://ftpmirror.gnu.org/parallel/"$latest".tar.bz2.sig > "$latest".tar.bz2.sig fi fetch_keys() { if gpg -h 2>/dev/null >/dev/null ; then # GnuPG installed # Setup .gnupg/gpg.conf if not already done echo | gpg 2>/dev/null >/dev/null if gpg --list-keys 0x2C6229E2FFFFFFF1 && gpg --list-keys 0xD1AB451688888888 ; then echo Keys fetched # OK return 0 else keyservers="keyserver.ubuntu.com pgp.surf.nl keys.openpgp.org pgp.benny-baumann.de" for keyserver in $keyservers ; do if gpg --keyserver "$keyserver" --recv-key 0x2C6229E2FFFFFFF1 && gpg --keyserver "$keyserver" --recv-key 0xD1AB451688888888 ; then # OK return 0 fi done echo echo "Cannot fetch keyID 0xD1AB451688888888, so the signature cannot be checked." return 1 fi else # GnuPG not installed echo echo "GnuPG (gpg) is not installed so the signature cannot be checked." return 1 fi } # Check signature - in case ftpmirror.gnu.org is compromised if fetch_keys; then if gpg --with-fingerprint "$latest".tar.bz2.sig 2>&1 | perl -e 'exit not grep /^Primary key fingerprint: BE9C B493 81DE 3166 A3BC..66C1 2C62 29E2 FFFF FFF1|^Primary key fingerprint: CDA0 1A42 08C4 F745 0610..7E7B D1AB 4516 8888 8888/, <>'; then # Source code signed by Ole Tange # KeyID 0x2C6229E2FFFFFFF1/0xD1AB451688888888 true else # GnuPG signature failed echo echo "The signature on $latest.tar.bz2 is wrong. This may indicate that a criminal has changed the code." echo "THIS IS BAD AND THE CODE WILL NOT BE INSTALLED." echo echo "See http://git.savannah.gnu.org/cgit/parallel.git/tree/README for other installation methods." exit 1 fi else # GnuPG not installed or public keys not downloaded echo "This means that if the code has been changed by criminals, you will not discover that!" echo echo "Continue anyway? (y/n)" read YN /dev/null; then # $HOME/bin is already in $PATH true else # Add $HOME/bin to $PATH for both bash and csh echo 'PATH=$PATH:$HOME/bin' >> "$HOME"/.bashrc echo 'setenv PATH ${PATH}:${HOME}/bin' >> "$HOME"/.cshrc fi # Is $HOME/share/man already in $MANPATH? if echo "$MANPATH" | grep "$HOME"/share/man >/dev/null; then # $HOME/share/man is already in $MANPATH true else # Add $HOME/share/man to $MANPATH for both bash and csh echo 'export MANPATH=$MANPATH:$HOME/share/man' >> "$HOME"/.bashrc echo 'setenv MANPATH ${MANPATH}:${HOME}/share/man' >> "$HOME"/.cshrc fi fi } # Make sure the whole script is downloaded before starting run