43 lines
1.2 KiB
Bash
Executable file
43 lines
1.2 KiB
Bash
Executable file
#!/bin/sh
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# Test 'tty'.
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# Copyright 2017-2025 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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# Make sure there's a tty on stdin.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ tty
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if test -t 0; then
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tty || fail=1
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tty -s || fail=1
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fi
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returns_ 1 tty </dev/null || fail=1
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returns_ 1 tty -s </dev/null || fail=1
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returns_ 1 tty <&- 2>/dev/null || fail=1
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returns_ 1 tty -s <&- || fail=1
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returns_ 2 tty a || fail=1
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returns_ 2 tty -s a || fail=1
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if test -w /dev/full && test -c /dev/full; then
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if test -t 0; then
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returns_ 3 tty >/dev/full || fail=1
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fi
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returns_ 3 tty </dev/null >/dev/full || fail=1
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fi
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Exit $fail
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