s3/test: make dd call more portable

using multiplicative suffixes like K, M etc. in dd isn't portable

Autobuild-User(master): Björn Jacke <bj@sernet.de>
Autobuild-Date(master): Sun Jun 10 23:29:42 CEST 2012 on sn-devel-104

diff --git a/source3/script/tests/test_smbclient_posix_large.sh b/source3/script/tests/test_smbclient_posix_large.sh
index a5fdbba3aceca943bdbe37b3561801c8d794d869..0aee7afcc031d17e89621a76c1b260878f6c738e 100755 (executable)
--- a/source3/script/tests/test_smbclient_posix_large.sh
+++ b/source3/script/tests/test_smbclient_posix_large.sh
@@ -49,7 +49,7 @@ EOF
 }
 
 rm -f $PREFIX/largefile
-dd if=/dev/zero of=$PREFIX/largefile skip=20M count=1 bs=1
+dd if=/dev/zero of=$PREFIX/largefile skip=$((20*1024*1024)) count=1 bs=1
 
 incdir=`dirname $0`/../../../testprogs/blackbox
 . $incdir/subunit.sh