1.6 KiB
- variable-not-or
- variable-or-doublequote
- variable-or-empty
- variable-or
- variable-or-slash
- variable-or-variable
;;; Gash – Guile As SHell ;;; Copyright © 2016, 2017, 2018 R.E.W. van Beusekom <rutger.van.beusekom@gmail.com> ;;; Copyright © 2018, 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org> ;;; Copyright © 2019 Timothy Sample <samplet@ngyro.com> ;;; ;;; This file is part of Gash. ;;; ;;; Gash 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. ;;; ;;; Gash is distributed in the hope that it will be useful, ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;;; GNU General Public License for more details. ;;; ;;; You should have received a copy of the GNU General Public License ;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.
variable-not-or
foo=baz
echo ${foo-bar}
:STDOUT:
baz
variable-or-doublequote
CPPFLAGS=${CPPFLAGS-"
-I ${srcdest}src
"}
echo $CPPFLAGS
:STDOUT:
-I src
variable-or-empty
echo ${bindir-}
:STDOUT:
variable-or
echo ${foo-bar}
:STDOUT:
bar
variable-or-slash
echo ${foo-bar/}
variable-or-variable
prefix=/usr
echo ${bindir-$prefix/bin}
:STDOUT:
/usr/bin