tests/misc/cat-proc.sh

   1 #!/bin/sh
   2 # Ensure that cat -E produces same output as cat, module '$'s,
   3 # even when applied to a file in /proc.
   4
   5 # Copyright (C) 2006-2019 Free Software Foundation, Inc.
   6
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation, either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19
  20 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
  21 print_ver_ cat
  22
  23
  24 f=/proc/cpuinfo
  25 test -f $f \
  26   || skip_ "no $f"
  27
  28
  29 # Yes, parts of /proc/cpuinfo might change between cat runs.
  30 # If that happens, consider choosing a file that's less likely to change,
  31 # or just filter out the changing lines.  The sed filter should help
  32 # to avoid any spurious numeric differences.
  33 cat -E $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > out || fail=1
  34 cat    $f | sed 's/[0-9][0-9]*/D/g' | tr -d '$' > exp || fail=1
  35
  36 compare exp out || fail=1
  37
  38 Exit $fail