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#!/bin/sh
# Test "ln --relative".
# Copyright (C) 2012-2018 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_ ln
mkdir -p usr/bin || framework_failure_
mkdir -p usr/lib/foo || framework_failure_
touch usr/lib/foo/foo || framework_failure_
ln -sr usr/lib/foo/foo usr/bin/foo
test $(readlink usr/bin/foo) = '../lib/foo/foo' || fail=1
ln -sr usr/bin/foo usr/lib/foo/link-to-foo
test $(readlink usr/lib/foo/link-to-foo) = 'foo' || fail=1
# Correctly update an existing link, which was broken in <= 8.21
ln -s dir1/dir2/f existing_link
ln -srf here existing_link
test $(readlink existing_link) = 'here' || fail=1
# Demonstrate resolved symlinks used to generate relative links
# so here, 'web/latest' will not be linked to the intermediate 'latest' link.
# You'd probably want to use realpath(1) in conjunction
# with ln(1) without --relative to give greater control.
ln -s release1 alpha
ln -s release2 beta
ln -s beta latest
mkdir web
ln -sr latest web/latest
test $(readlink web/latest) = '../release2' || fail=1
# Expect this to fail with exit status 1, or to succeed quietly (freebsd).
# Prior to coreutils-8.23, it would segfault.
ln -sr '' F
case $? in [01]) ;; *) fail=1;; esac
Exit $fail
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