1
0
Fork 0
coreutils/tests/cksum/md5sum-parallel.sh
Daniel Baumann c08a8f7410
Adding upstream version 9.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-21 07:57:52 +02:00

36 lines
1.3 KiB
Bash
Executable file

#!/bin/sh
# Ensure that md5sum prints each checksum atomically
# so that concurrent md5sums don't intersperse their output
# Copyright (C) 2009-2025 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 <https://www.gnu.org/licenses/>.
. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
print_ver_ md5sum
xargs -P2 </dev/null >/dev/null 2>&1 \
|| skip_ 'xargs -P is required'
(mkdir tmp && cd tmp && seq 500 | xargs touch)
# This will output at least 16KiB per process
# and start 3 processes, with 2 running concurrently,
# which triggers often on Fedora 11 at least.
(find tmp tmp tmp -type f | xargs -n500 -P2 md5sum 2>err) |
sed -n '/[0-9a-f]\{32\} /!p' |
grep . > /dev/null && fail=1
compare /dev/null err || fail=1
Exit $fail