10seconds_install

   1 #!/bin/bash
   2
   3 # Copyright (C) 2013-2019 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 #    $ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
  19 #       fetch -o - http://pi.dk/3) > install.sh
  20 #    $ sha1sum install.sh
  21 #    $ md5sum install.sh
  22 #    $ sha512sum install.sh
  23 #    $ bash install.sh
  24
  25 run() {
  26     # tail on openindiana must be /usr/xpg4/bin/tail
  27     TAIL=$(echo | tail -n 1 2>/dev/null && echo tail ||
  28                       (echo | /usr/xpg4/bin/tail -n 1 && echo /usr/xpg4/bin/tail))
  29     # grep on openindiana must be /usr/xpg4/bin/grep
  30     GREP=$(echo | grep -vE . 2>/dev/null && echo grep ||
  31                       (echo | /usr/xpg4/bin/grep -vE . && echo /usr/xpg4/bin/grep))
  32     # FreeBSD prefers 'fetch', MacOS prefers 'curl', Linux prefers 'wget'
  33     GET=$(
  34         (lynx -source /dev/null && echo lynx -source) ||
  35             (fetch -o /dev/null file:///bin/sh && echo fetch -o -) ||
  36             (curl -h >/dev/null && echo curl -L) ||
  37             (wget -h >/dev/null && echo wget -qO -) ||
  38             echo 'No lynx, wget, curl, fetch: Please inform parallel@gnu.org what you use for downloading URLs' >&2
  39        )
  40     if test "$GET" = ""; then
  41         exit 1
  42     fi
  43
  44     if ! perl -e 1; then
  45         echo No perl installed. GNU Parallel depends on perl. Install perl and retry.
  46         exit 1
  47     fi
  48
  49     LANG=C
  50     LATEST=$($GET http://ftpmirror.gnu.org/parallel |
  51                     perl -ne '/.*(parallel-\d{8})/ and print $1."\n"' |
  52                     sort | $TAIL -n1)
  53     if test \! -e $LATEST.tar.bz2; then
  54         # Source tar does not exist
  55         rm -f $LATEST.tar.bz2 $LATEST.tar.bz2.sig
  56         $GET http://ftpmirror.gnu.org/parallel/$LATEST.tar.bz2 > $LATEST.tar.bz2
  57         $GET http://ftpmirror.gnu.org/parallel/$LATEST.tar.bz2.sig > $LATEST.tar.bz2.sig
  58     fi
  59
  60     fetch_keys() {
  61         if gpg -h 2>/dev/null >/dev/null ; then
  62             # GnuPG installed
  63             # Setup .gnupg/gpg.conf if not already done
  64             echo | gpg 2>/dev/null >/dev/null
  65             keyserver1=keys.gnupg.net
  66             keyserver2=pool.sks-keyservers.net
  67             if gpg --keyserver $keyserver1 --recv-key 0xFFFFFFF1 ||
  68                     gpg --keyserver $keyserver2 --recv-key 0xFFFFFFF1 ; then
  69                 if gpg --keyserver $keyserver1 --recv-key 0x88888888 ||
  70                         gpg --keyserver $keyserver2 --recv-key 0x88888888; then
  71                     # OK
  72                     return 0
  73                 else
  74                     echo
  75                     echo "Cannot fetch keyID 0x88888888, so the signature cannot be checked."
  76                     return 1
  77                 fi
  78             else
  79                 echo
  80                 echo "Cannot fetch keyID 0xFFFFFFF1, so the signature cannot be checked."
  81                 return 1
  82             fi
  83         else
  84             # GnuPG not installed
  85             echo
  86             echo "GnuPG (gpg) is not installed so the signature cannot be checked."
  87             return 1
  88         fi
  89     }
  90
  91     # Check signature - in case ftpmirror.gnu.org is compromised
  92     if fetch_keys; then
  93         if gpg --with-fingerprint $LATEST.tar.bz2.sig 2>&1 |
  94                $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
  95             # Source code signed by Ole Tange <ole@tange.dk>
  96             # KeyID FFFFFFF1/88888888
  97             true
  98         else
  99             # GnuPG signature failed
 100             echo
 101             echo "The signature on $LATEST.tar.bz2 is wrong. This may indicate that a criminal has changed the code."
 102             echo "THIS IS BAD AND THE CODE WILL NOT BE INSTALLED."
 103             echo
 104             echo "See http://git.savannah.gnu.org/cgit/parallel.git/tree/README for other installation methods."
 105             exit 1
 106         fi
 107     else
 108         # GnuPG not installed or public keys not downloaded
 109         echo "This means that if the code has been changed by criminals, you will not discover that!"
 110         echo
 111         echo "Continue anyway? (y/n)"
 112         read YN </dev/tty
 113         if test "$YN" = "n"; then
 114             # Stop
 115             exit 2
 116         else
 117             # Continue
 118             true
 119         fi
 120     fi
 121
 122     bzip2 -dc $LATEST.tar.bz2 | tar xf -
 123     cd $LATEST || exit 2
 124     if ./configure && make && make install; then
 125         echo
 126         echo GNU $LATEST installed globally
 127     else
 128         if ./configure --prefix=$HOME && make && make install; then
 129             echo
 130             echo GNU $LATEST installed in $HOME/bin
 131         else
 132             mkdir -p $HOME/bin/;
 133             chmod 755 src/*;
 134             cp src/parallel src/env_parallel* src/sem src/sql src/niceload src/parcat $HOME/bin;
 135             echo
 136             echo GNU $LATEST copied to $HOME/bin
 137         fi
 138
 139         # Is $HOME/bin already in $PATH?
 140         if echo $PATH | grep $HOME/bin >/dev/null; then
 141             # $HOME/bin is already in $PATH
 142             true
 143         else
 144             # Add $HOME/bin to $PATH for both bash and csh
 145             echo 'PATH=$PATH:$HOME/bin' >> $HOME/.bashrc
 146             echo 'setenv PATH ${PATH}:${HOME}/bin' >> $HOME/.cshrc
 147         fi
 148
 149         # Is $HOME/share/man already in $MANPATH?
 150         if echo $MANPATH | grep $HOME/share/man >/dev/null; then
 151             # $HOME/share/man is already in $MANPATH
 152             true
 153         else
 154             # Add $HOME/share/man to $MANPATH for both bash and csh
 155             echo 'MANPATH=$MANPATH:$HOME/share/man' >> $HOME/.bashrc
 156             echo 'setenv MANPATH ${MANPATH}:${HOME}/share/man' >> $HOME/.cshrc
 157         fi
 158     fi
 159 }
 160
 161 # Make sure the whole script is downloaded before starting
 162 run