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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, 2020 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/>.
* iohere-builtin
:script:
#+begin_src sh
\cat <<EOF
foobar
EOF
#+end_src
* iohere
:script:
#+begin_src sh
cat <<EOF
foobar
EOF
#+end_src
:stdout:
#+begin_example
foobar
#+end_example
* redirect-append
:script:
#+begin_src sh
echo foo > $TEST_TMP/bar
echo foo >> $TEST_TMP/bar
cat $TEST_TMP/bar
rm $TEST_TMP/bar
#+end_src
:stdout:
#+begin_example
foo
foo
#+end_example
* redirect-clobber
:script:
#+begin_src sh
echo foo > /tmp/bar$$
cat /tmp/bar$$
> /tmp/bar$$
cat /tmp/bar$$
#+end_src
:stdout:
#+begin_example
foo
#+end_example
* redirect-in-out
:script:
#+begin_src sh
cat < tests/data/foo > /tmp/bar$$
cat /tmp/bar$$
rm /tmp/bar$$
#+end_src
:stdout:
#+begin_example
foo
bar
baz
#+end_example
* redirect-in
:script:
#+begin_src sh
\cat < tests/data/foo
#+end_src
;; * redirect-merge
;; :script:
;; #+begin_src sh
;; set +e
;; ls /bin/sh /bin/foo > bar 2>&1
;; echo foo
;; cat bar
;; rm bar
;; #+end_src
;; :stdout:
;; #+begin_example
;; foo
;; ls: cannot access '/bin/foo': No such file or directory
;; /bin/sh
;; #+end_example
* redirect-pipe
:script:
#+begin_src sh
echo foo | grep foo 2>/dev/null
#+end_src
:stdout:
#+begin_example
foo
#+end_example
* redirect-sed
:script:
#+begin_src sh
unset DESTDIR
sed \
-e "s,^#! /bin/sh,#! /bin/GASH," \
tests/data/diff.scm > $DESTDIR/tmp/diff.scm
cat $DESTDIR/tmp/diff.scm
rm $DESTDIR/tmp/diff.scm
#+end_src
:stdout:
#+begin_example
#! /bin/GASH
!#
#+end_example
* redirect
:script:
#+begin_src sh
echo foo 1>/tmp/bar$$
cat /tmp/bar$$
rm /tmp/bar$$
#+end_src
:stdout:
#+begin_example
foo
#+end_example
* redirect-space
:script:
#+begin_src sh
echo foo > /tmp/bar$$
cat /tmp/bar$$
rm /tmp/bar$$
#+end_src
:stdout:
#+begin_example
foo
#+end_example
* Files opened for redirect can be executed immediately
:script:
#+begin_src sh
cat > $TEST_TMP/foo.sh <<EOF
#!$SYSTEM_SHELL
echo foo
EOF
chmod +x $TEST_TMP/foo.sh
$TEST_TMP/foo.sh
rm -f $TEST_TMP/foo.sh
#+end_src
:stdout:
#+begin_example
foo
#+end_example
* Redirecting output respects the noclobber option
:script:
#+begin_src sh
set -o noclobber
echo foo > $TEST_TMP/noclobber && echo created
cat $TEST_TMP/noclobber
echo bar >| $TEST_TMP/noclobber && echo clobbered
cat $TEST_TMP/noclobber
echo baz > $TEST_TMP/noclobber || echo not clobbered
cat $TEST_TMP/noclobber
rm -f $TEST_TMP/noclobber
#+end_src
:stdout:
#+begin_example
created
foo
clobbered
bar
not clobbered
bar
#+end_example
|
