10seconds_install

   1 #!/bin/bash
   2
   3 # Copyright (C) 2013-2018 Ole Tange and Free Software Foundation, Inc.
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This script downloads the latest version of GNU Parallel, checks
  11 # the signature and installs it.
  12 #
  13 # It first tries to install it globally.
  14 # If that fails, it does a personal installation.
  15 # If that fails, it copies to $HOME/bin
  16 #
  17 # You can download and run the script directly by:
  18 #   (lynx -source pi.dk/3 || wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash
  19
  20 run() {
  21     # tail on openindiana must be /usr/xpg4/bin/tail
  22     TAIL=$(echo | tail -n 1 2>/dev/null && echo tail ||
  23                       (echo | /usr/xpg4/bin/tail -n 1 && echo /usr/xpg4/bin/tail))
  24     # grep on openindiana must be /usr/xpg4/bin/grep
  25     GREP=$(echo | grep -vE . 2>/dev/null && echo grep ||
  26                       (echo | /usr/xpg4/bin/grep -vE . && echo /usr/xpg4/bin/grep))
  27     # FreeBSD prefers 'fetch', MacOS prefers 'curl', Linux prefers 'wget'
  28     GET=$(
  29         (lynx -source /dev/null && echo lynx -source) ||
  30             (fetch -o /dev/null file:///bin/sh && echo fetch -o -) ||
  31             (curl -h >/dev/null && echo curl -L) ||
  32             (wget -h >/dev/null && echo wget -qO -) ||
  33             echo 'No lynx, wget, curl, fetch: Please inform parallel@gnu.org what you use for downloading URLs' >&2
  34        )
  35     if test "$GET" = ""; then
  36         exit 1
  37     fi
  38
  39     if ! perl -e 1; then
  40         echo No perl installed. GNU Parallel depends on perl. Install perl and retry.
  41         exit 1
  42     fi
  43
  44     LANG=C
  45     LATEST=$($GET http://ftpmirror.gnu.org/parallel |
  46                     perl -ne '/.*(parallel-\d{8})/ and print $1."\n"' |
  47                     sort | $TAIL -n1)
  48     if test \! -e $LATEST.tar.bz2; then
  49         # Source tar does not exist
  50         rm -f $LATEST.tar.bz2 $LATEST.tar.bz2.sig
  51         $GET http://ftpmirror.gnu.org/parallel/$LATEST.tar.bz2 > $LATEST.tar.bz2
  52         $GET http://ftpmirror.gnu.org/parallel/$LATEST.tar.bz2.sig > $LATEST.tar.bz2.sig
  53     fi
  54
  55     fetch_keys() {
  56         if gpg -h 2>/dev/null >/dev/null ; then
  57             # GnuPG installed
  58             # Setup .gnupg/gpg.conf if not already done
  59             echo | gpg 2>/dev/null >/dev/null
  60             keyserver1=keys.gnupg.net
  61             keyserver2=pool.sks-keyservers.net
  62             if gpg --keyserver $keyserver1 --recv-key 0xFFFFFFF1 ||
  63                     gpg --keyserver $keyserver2 --recv-key 0xFFFFFFF1 ; then
  64                 if gpg --keyserver $keyserver1 --recv-key 0x88888888 ||
  65                         gpg --keyserver $keyserver2 --recv-key 0x88888888; then
  66                     # OK
  67                     return 0
  68                 else
  69                     echo
  70                     echo "Cannot fetch keyID 0x88888888, so the signature cannot be checked."
  71                     return 1
  72                 fi
  73             else
  74                 echo
  75                 echo "Cannot fetch keyID 0xFFFFFFF1, so the signature cannot be checked."
  76                 return 1
  77             fi
  78         else
  79             # GnuPG not installed
  80             echo
  81             echo "GnuPG (gpg) is not installed so the signature cannot be checked."
  82             return 1
  83         fi
  84     }
  85
  86
  87     # Check signature - in case ftpmirror.gnu.org is compromised
  88     if fetch_keys; then
  89         if gpg --with-fingerprint $LATEST.tar.bz2.sig 2>&1 |
  90                $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
  91             # Source code signed by Ole Tange <ole@tange.dk>
  92             # KeyID FFFFFFF1/88888888
  93             true
  94         else
  95             # GnuPG signature failed
  96             echo
  97             echo "The signature on $LATEST.tar.bz2 is wrong. This may indicate that a criminal has changed the code."
  98             echo "THIS IS BAD AND THE CODE WILL NOT BE INSTALLED."
  99             echo
 100             echo "See http://git.savannah.gnu.org/cgit/parallel.git/tree/README for other installation methods."
 101             exit 1
 102         fi
 103     else
 104         # GnuPG not installed or public keys not downloaded
 105         echo "This means that if the code has been changed by criminals, you will not discover that!"
 106         echo
 107         echo "Continue anyway? (y/n)"
 108         read YN </dev/tty
 109         if test "$YN" = "n"; then
 110             # Stop
 111             exit 2
 112         else
 113             # Continue
 114             true
 115         fi
 116     fi
 117
 118     bzip2 -dc $LATEST.tar.bz2 | tar xf -
 119     cd $LATEST || exit 2
 120     if ./configure && make && make install; then
 121         echo
 122         echo GNU $LATEST installed globally
 123     else
 124         if ./configure --prefix=$HOME && make && make install; then
 125             echo
 126             echo GNU $LATEST installed in $HOME/bin
 127         else
 128             mkdir -p $HOME/bin/;
 129             chmod 755 src/*;
 130             cp src/parallel src/env_parallel* src/sem src/sql src/niceload src/parcat $HOME/bin;
 131             echo
 132             echo GNU $LATEST copied to $HOME/bin
 133         fi
 134
 135         # Is $HOME/bin already in $PATH?
 136         if echo $PATH | grep $HOME/bin >/dev/null; then
 137             # $HOME/bin is already in $PATH
 138             true
 139         else
 140             # Add $HOME/bin to $PATH for both bash and csh
 141             echo 'PATH=$PATH:$HOME/bin' >> $HOME/.bashrc
 142             echo 'setenv PATH ${PATH}:${HOME}/bin' >> $HOME/.cshrc
 143         fi
 144
 145         # Is $HOME/share/man already in $MANPATH?
 146         if echo $MANPATH | grep $HOME/share/man >/dev/null; then
 147             # $HOME/share/man is already in $MANPATH
 148             true
 149         else
 150             # Add $HOME/share/man to $MANPATH for both bash and csh
 151             echo 'MANPATH=$MANPATH:$HOME/share/man' >> $HOME/.bashrc
 152             echo 'setenv MANPATH ${MANPATH}:${HOME}/share/man' >> $HOME/.cshrc
 153         fi
 154     fi
 155 }
 156
 157 # Make sure the whole script is downloaded before starting
 158 run