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#!/bin/sh
# Ensure that cat -E produces same output as cat, module '$'s,
# even when applied to a file in /proc.
# Copyright (C) 2006-2012 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
. "${srcdir=.}/init.sh"; path_prepend_ ../src
print_ver_ cat
f=/proc/cpuinfo
test -f $f \
|| skip_ "no $f"
# Yes, parts of /proc/cpuinfo might change between cat runs.
# If that happens, consider choosing a file that's less likely to change,
# or just filter out the changing lines. The sed filter should help
# to avoid any spurious numeric differences.
cat -E $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > out || fail=1
cat $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > exp || fail=1
compare exp out || fail=1
Exit $fail
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