src/env_parallel

   1 #!/usr/bin/env bash
   2
   3 # Copyright (C) 2016-2024 Ole Tange, http://ole.tange.dk and Free
   4 # Software Foundation, Inc.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful, but
  12 # WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, see <http://www.gnu.org/licenses/>
  18 # or write to the Free Software Foundation, Inc., 51 Franklin St,
  19 # Fifth Floor, Boston, MA 02110-1301 USA
  20 #
  21 # SPDX-FileCopyrightText: 2021-2024 Ole Tange, http://ole.tange.dk and Free Software and Foundation, Inc.
  22 # SPDX-License-Identifier: GPL-3.0-or-later
  23
  24 grepq() {
  25     # grep -q for systems without -q
  26     grep >/dev/null 2>/dev/null "$@"
  27 }
  28
  29 installer() {
  30     source="$1"
  31     script="$2"
  32     into="$3"
  33     if grepq $script "$into"; then
  34         true already installed
  35     else
  36         echo $source \`which $script\` >> "$into"
  37     fi
  38 }
  39
  40 while test $# -gt 0; do
  41   key="$1"
  42
  43   case $key in
  44       -i|--install)
  45           installer . env_parallel.bash  "$HOME"/.bashrc
  46           installer . env_parallel.sh  "$HOME"/.shrc
  47           installer . env_parallel.zsh   "$HOME"/.zshenv
  48           installer source env_parallel.ksh "$HOME"/.kshrc
  49           installer source env_parallel.mksh "$HOME"/.mkshrc
  50           echo $SHELL | grepq /pdksh &&
  51               installer . env_parallel.pdksh "$HOME"/.profile
  52           echo $SHELL | grepq /ash &&
  53               installer . env_parallel.ash "$HOME"/.profile
  54           echo $SHELL | grepq /dash &&
  55               installer . env_parallel.dash "$HOME"/.profile
  56           installer source env_parallel.csh "$HOME"/.cshrc
  57           installer source env_parallel.tcsh "$HOME"/.tcshrc
  58           mkdir -p "$HOME"/.config/fish
  59           grepq env_parallel.fish "$HOME"/.config/fish/config.fish ||
  60             echo '. (which env_parallel.fish)' >> "$HOME"/.config/fish/config.fish
  61           echo 'Installed env_parallel in:'
  62           echo "    " "$HOME"/.bashrc
  63           echo "    " "$HOME"/.shrc
  64           echo "    " "$HOME"/.zshenv
  65           echo "    " "$HOME"/.config/fish/config.fish
  66           echo "    " "$HOME"/.kshrc
  67           echo "    " "$HOME"/.mkshrc
  68           echo "    " "$HOME"/.profile
  69           echo "    " "$HOME"/.cshrc
  70           echo "    " "$HOME"/.tcshrc
  71           exit
  72       ;;
  73       *)
  74         echo "Unknown option: $key"
  75       ;;
  76   esac
  77   shift # past argument or value
  78 done
  79
  80
  81 cat <<'_EOS'
  82 You have called the dummy script "env_parallel".
  83
  84 env_parallel only works if it is a function.
  85
  86 You need to do this and restart your shell:
  87
  88 bash:  Put this in $HOME/.bashrc:  . env_parallel.bash
  89        E.g. by doing:  echo '. env_parallel.bash' >> $HOME/.bashrc
  90        Supports: variables, aliases, functions, arrays
  91
  92 fish:  Put this in $HOME/.config/fish/config.fish:  . (which env_parallel.fish)
  93        E.g. by doing:
  94          echo '. (which env_parallel.fish)' >> $HOME/.config/fish/config.fish
  95        Supports: variables, aliases, functions, arrays
  96
  97 ksh:   Put this in $HOME/.kshrc:  source env_parallel.ksh
  98        E.g. by doing:  echo 'source env_parallel.ksh' >> $HOME/.kshrc
  99        Supports: variables, aliases, functions, arrays
 100
 101 mksh:  Put this in $HOME/.mkshrc:  source env_parallel.mksh
 102        E.g. by doing:  echo 'source env_parallel.mksh' >> $HOME/.mkshrc
 103        Supports: variables, aliases, functions, arrays
 104
 105 pdksh: Put this in $HOME/.profile:  source env_parallel.pdksh
 106        E.g. by doing:  echo '. env_parallel.pdksh' >> $HOME/.profile
 107        Supports: variables, aliases, functions, arrays
 108
 109 zsh:   Put this in $HOME/.zshrc:  . env_parallel.zsh
 110        E.g. by doing:  echo '. env_parallel.zsh' >> $HOME/.zshenv
 111        Supports: variables, functions, arrays
 112
 113 ash:   Put this in $HOME/.profile:  . env_parallel.ash
 114        E.g. by doing:  echo '. env_parallel.ash' >> $HOME/.profile
 115        Supports: variables, aliases
 116
 117 dash:  Put this in $HOME/.profile:  . env_parallel.dash
 118        E.g. by doing:  echo '. env_parallel.dash' >> $HOME/.profile
 119        Supports: variables, aliases
 120
 121 csh:   Put this in $HOME/.cshrc:  source `which env_parallel.csh`
 122        E.g. by doing:  echo 'source `which env_parallel.csh`' >> $HOME/.cshrc
 123        Supports: variables, aliases, arrays with no special chars
 124
 125 tcsh:  Put this in $HOME/.tcshrc:  source `which env_parallel.tcsh`
 126        E.g. by doing:  echo 'source `which env_parallel.tcsh`' >> $HOME/.tcshrc
 127        Supports: variables, aliases, arrays with no special chars
 128
 129 To install in all shells run:
 130
 131   env_parallel --install
 132
 133 In a script you need to run this before using env_parallel:
 134
 135 bash:  . env_parallel.bash
 136 ksh:   source env_parallel.ksh
 137 mksh:  source env_parallel.mksh
 138 pdksh: source env_parallel.pdksh
 139 zsh:   . env_parallel.zsh
 140 ash:   . env_parallel.ash
 141 dash:  . env_parallel.dash
 142
 143 For details: see  man env_parallel
 144
 145 _EOS