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coreutils/tests/tail-2/flush-initial
Pádraig Brady fd9750b0ff tests: tail-2/flush-initial should not rely on stdbuf
* tests/tail-2/flush-initial: stdbuf is not built on all systems.
In any case it's redundant since stdout will automatically be buffered
since we're redirecting to file. So just call tail without using stdbuf.
2009-09-07 21:52:30 +01:00

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#!/bin/sh
# inotify-based tail -f didn't flush its initial output before blocking
# Copyright (C) 2009 Free Software Foundation, Inc.
# This program 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.
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
if test "$VERBOSE" = yes; then
set -x
tail --version
fi
. $srcdir/test-lib.sh
fail=0
echo line > in || fail=1
# Output should be buffered since we're writing to file
# so we're depending on the flush to write out
tail -f in > out &
tail_pid=$!
# Wait for 1 second for the file to be flushed.
for i in $(seq 10); do
test -s out && break
echo sleep .1s
sleep .1
done
test -s out || fail=1
kill $tail_pid
Exit $fail