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|
;;; 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/>.
* assignment-backtick
:script:
#+begin_src sh
obj=ar.o
objs="$objs `basename $obj`"
echo "objs:>$objs<"
#+end_src
:stdout:
#+begin_example
objs:> ar.o<
#+end_example
* assignment-doublequoted-doublequotes
:script:
#+begin_src sh
aliaspath=alias
localedir=locale
defines="-DALIASPATH=\"${aliaspath}\" -DLOCALEDIR=\"${localedir}\""
echo cc $defines
#+end_src
:stdout:
#+begin_example
cc -DALIASPATH="alias" -DLOCALEDIR="locale"
#+end_example
* assignment-double-quote
:script:
#+begin_src sh
srcdir="."
#+end_src
* assignment-echo
:script:
#+begin_src sh
SHELL=/bin/bash
echo $SHELL
#+end_src
:stdout:
#+begin_example
/bin/bash
#+end_example
* assignment-empty
:script:
#+begin_src sh
a=
echo a:$a
#+end_src
:stdout:
#+begin_example
a:
#+end_example
* assignment
:script:
#+begin_src sh
SHELL=/bin/bash
#+end_src
* assignment-singlequote
:script:
#+begin_src sh
srcdir='.'
#+end_src
* assignment-variable-word
:script:
#+begin_src sh
SHELL=gash
bin=${SHELL}/bin
echo $bin
#+end_src
:stdout:
#+begin_example
gash/bin
#+end_example
* assignment-word-variable
:script:
#+begin_src sh
SHELL=gash
PATH=bin:${SHELL}
echo $PATH
#+end_src
:stdout:
#+begin_example
bin:gash
#+end_example
* Assignments reset exit status
:script:
#+begin_src sh
set +e
false
x=foobar
#+end_src
* Assigning exit status works
:script:
#+begin_src sh
set +e
false
x=$?
echo $x
#+end_src
:stdout:
#+begin_example
1
#+end_example
* Assignments use command substitutions for exit status
:script:
#+begin_src sh
set +e
x=$(false)
echo $?
x=$(true)
echo $?
#+end_src
:stdout:
#+begin_example
1
0
#+end_example
* Assignments update exit status on the fly
:script:
#+begin_src sh
set +e
false
x=$? y=$(true) z=$?
echo $x $z
#+end_src
:stdout:
#+begin_example
1 0
#+end_example
|
