tests/dd/skip-seek2.sh

   1 #!/bin/sh
   2 # show how to skip an amount that is smaller than the nominal block size.
   3 # There's a more realistic example in the documentation.
   4
   5 # Copyright (C) 2000-2024 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_ dd
  22
  23
  24 echo LA:3456789abcdef > in || framework_failure_
  25 (dd bs=1 skip=3 count=0 && dd bs=5) < in > out 2> /dev/null || fail=1
  26 case $(cat out) in
  27   3456789abcdef) ;;
  28   *) fail=1 ;;
  29 esac
  30
  31 echo LA:3456789abcdef > in || framework_failure_
  32 (dd bs=1 skip=3 count=0 && dd bs=5 count=2) < in > out 2> /dev/null || fail=1
  33 case $(cat out) in
  34   3456789abc) ;;
  35   *) fail=1 ;;
  36 esac
  37
  38 Exit $fail