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56 lines
1.5 KiB
Bash
Executable File
56 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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# show how to skip an amount that is smaller than the nominal block size.
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# There's a more realistic example in the documentation.
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# Copyright (C) 2000, 2004, 2006 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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if test "$VERBOSE" = yes; then
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set -x
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dd --version
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fi
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pwd=`pwd`
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tmp=skip-seek.$$
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trap 'status=$?; cd "$pwd" && rm -rf $tmp && exit $status' 0
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trap '(exit $?); exit' 1 2 13 15
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framework_failure=0
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mkdir $tmp || framework_failure=1
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cd $tmp || framework_failure=1
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if test $framework_failure = 1; then
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echo 'failure in testing framework'
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(exit 1); exit 1
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fi
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fail=0
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echo LA:3456789abcdef > in || fail=1
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(dd bs=1 skip=3 count=0 && dd bs=5) < in > out 2> /dev/null || fail=1
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case `cat out` in
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3456789abcdef) ;;
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*) fail=1 ;;
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esac
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echo LA:3456789abcdef > in || fail=1
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(dd bs=1 skip=3 count=0 && dd bs=5 count=2) < in > out 2> /dev/null || fail=1
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case `cat out` in
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3456789abc) ;;
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*) fail=1 ;;
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esac
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(exit $fail); exit $fail
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