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