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#!/bin/sh
#
# Transfer a large chunk of data through pv using pipes, sending it in a
# bursty fashion, and check data correctness afterwards.
rm -f $TMP1 $TMP2 2>/dev/null
# exit on non-zero return codes
set -e
# generate some data
dd if=/dev/urandom of=$TMP1 bs=1024 count=10240 2>/dev/null
CKSUM1=`cksum $TMP1 | awk '{print $1}'`
# read through pv and test afterwards
(
dd if=$TMP1 bs=1 count=9000
sleep 1
dd if=$TMP1 bs=1 skip=9000 count=1240
sleep 1
dd if=$TMP1 bs=1024 skip=10 count=1014
sleep 1
dd if=$TMP1 bs=1024 skip=1024 count=1024
sleep 1
dd if=$TMP1 bs=1024 skip=2048
) 2>/dev/null | $PROG -q -L 2M | cat > $TMP2
CKSUM2=`cksum $TMP2 | awk '{print $1}'`
test "x$CKSUM1" = "x$CKSUM2"
# same again but with one less pipe
(
dd if=$TMP1 bs=1 count=9000
sleep 1
dd if=$TMP1 bs=1 skip=9000 count=1240
sleep 1
dd if=$TMP1 bs=1024 skip=10 count=1014
sleep 1
dd if=$TMP1 bs=1024 skip=1024 count=1024
sleep 1
dd if=$TMP1 bs=1024 skip=2048
) 2>/dev/null | $PROG -q -L 2M > $TMP2
CKSUM2=`cksum $TMP2 | awk '{print $1}'`
test "x$CKSUM1" = "x$CKSUM2"
# clean up
rm -f $TMP1 $TMP2 2>/dev/null
# EOF
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