gash/tests/redirects.org

• iohere-builtin
• iohere
• redirect-append
• redirect-clobber
• redirect-in-out
• redirect-in
• redirect-pipe
• redirect-sed
• redirect
• redirect-space
• Files opened for redirect can be executed immediately
• Redirecting output respects the noclobber option

;;; 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

  \cat <<EOF
  foobar
  EOF

iohere

  cat <<EOF
  foobar
  EOF

:STDOUT:

  foobar

redirect-append

  echo foo > $TEST_TMP/bar
  echo foo >> $TEST_TMP/bar
  cat $TEST_TMP/bar
  rm $TEST_TMP/bar

:STDOUT:

  foo
  foo

redirect-clobber

  echo foo > /tmp/bar$$
  cat /tmp/bar$$
  > /tmp/bar$$
  cat /tmp/bar$$

:STDOUT:

  foo

redirect-in-out

  cat < tests/data/foo > /tmp/bar$$
  cat /tmp/bar$$
  rm /tmp/bar$$

:STDOUT:

  foo
  bar
  baz

redirect-in

  \cat < tests/data/foo

;; * 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

  echo foo | grep foo 2>/dev/null

:STDOUT:

  foo

redirect-sed

  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

:STDOUT:

  #! /bin/GASH
  !#

redirect

  echo foo 1>/tmp/bar$$
  cat /tmp/bar$$
  rm /tmp/bar$$

:STDOUT:

  foo

redirect-space

  echo foo > /tmp/bar$$
  cat /tmp/bar$$
  rm /tmp/bar$$

:STDOUT:

  foo

Files opened for redirect can be executed immediately

  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

:STDOUT:

  foo

Redirecting output respects the noclobber option

  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

:STDOUT:

  created
  foo
  clobbered
  bar
  not clobbered
  bar