#!/bin/sh
# show how to skip an amount that is smaller than the nominal block size.
# There's a more realistic example in the documentation.

# Copyright (C) 2000, 2004 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 2 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.

if test "$VERBOSE" = yes; then
  set -x
  dd --version
fi

pwd=`pwd`
tmp=skip-seek.$$
trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
trap '(exit $?); exit' 1 2 13 15

framework_failure=0
mkdir $tmp || framework_failure=1
cd $tmp || framework_failure=1

if test $framework_failure = 1; then
  echo 'failure in testing framework'
  (exit 1); exit 1
fi

fail=0

echo LA:3456789abcdef > in || fail=1
(dd bs=1 skip=3 count=0 && dd bs=5) < in > out 2> /dev/null || fail=1
case `cat out` in
  3456789abcdef) ;;
  *) fail=1 ;;
esac

echo LA:3456789abcdef > in || fail=1
(dd bs=1 skip=3 count=0 && dd bs=5 count=2) < in > out 2> /dev/null || fail=1
case `cat out` in
  3456789abc) ;;
  *) fail=1 ;;
esac

(exit $fail); exit $fail