parallel/10seconds_install

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#!/bin/bash
# Copyright (C) 2013-2018 Ole Tange and Free Software Foundation, Inc.
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#
# 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 script downloads the latest version of GNU Parallel, checks
# the signature and installs it.
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#
# It first tries to install it globally.
# If that fails, it does a personal installation.
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# If that fails, it copies to $HOME/bin
#
# You can download and run the script directly by:
# (lynx -source pi.dk/3 || wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash
run() {
# tail on openindiana must be /usr/xpg4/bin/tail
TAIL=$(echo | tail -n 1 2>/dev/null && echo tail ||
(echo | /usr/xpg4/bin/tail -n 1 && echo /usr/xpg4/bin/tail))
# grep on openindiana must be /usr/xpg4/bin/grep
GREP=$(echo | grep -vE . 2>/dev/null && echo grep ||
(echo | /usr/xpg4/bin/grep -vE . && echo /usr/xpg4/bin/grep))
# FreeBSD prefers 'fetch', MacOS prefers 'curl', Linux prefers 'wget'
GET=$(
(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"' |
sort | $TAIL -n1)
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
keyserver1=keys.gnupg.net
keyserver2=pool.sks-keyservers.net
if gpg --keyserver $keyserver1 --recv-key 0xFFFFFFF1 ||
gpg --keyserver $keyserver2 --recv-key 0xFFFFFFF1 ; then
if gpg --keyserver $keyserver1 --recv-key 0x88888888 ||
gpg --keyserver $keyserver2 --recv-key 0x88888888; then
# OK
return 0
else
echo
echo "Cannot fetch keyID 0x88888888, so the signature cannot be checked."
return 1
fi
else
echo
echo "Cannot fetch keyID 0xFFFFFFF1, 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 |
$GREP -E '^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 <ole@tange.dk>
# KeyID FFFFFFF1/88888888
true
else
# GnuPG signature failed
echo
echo "The signature on $LATEST.tar.bz2 is wrong. This may indicate that a criminal has changed the code."
echo "THIS IS BAD AND THE CODE WILL NOT BE INSTALLED."
echo
echo "See http://git.savannah.gnu.org/cgit/parallel.git/tree/README for other installation methods."
exit 1
fi
else
# GnuPG not installed or public keys not downloaded
echo "This means that if the code has been changed by criminals, you will not discover that!"
echo
echo "Continue anyway? (y/n)"
read YN </dev/tty
if test "$YN" = "n"; then
# Stop
exit 2
else
# Continue
true
fi
fi
bzip2 -dc $LATEST.tar.bz2 | tar xf -
cd $LATEST || exit 2
if ./configure && make && make install; then
echo
echo GNU $LATEST installed globally
else
if ./configure --prefix=$HOME && make && make install; then
echo
echo GNU $LATEST installed in $HOME/bin
else
mkdir -p $HOME/bin/;
chmod 755 src/*;
cp src/parallel src/env_parallel* src/sem src/sql src/niceload src/parcat $HOME/bin;
echo
echo GNU $LATEST copied to $HOME/bin
fi
# Is $HOME/bin already in $PATH?
if echo $PATH | grep $HOME/bin >/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
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# 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 $MANPATH for both bash and csh
echo 'MANPATH=$MANPATH:$HOME/share/man' >> $HOME/.bashrc
echo 'setenv MANPATH ${MANPATH}:${HOME}/share/man' >> $HOME/.cshrc
fi
fi
}
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# Make sure the whole script is downloaded before starting
run