Shell script help
fbsd_user at a1poweruser.com
Wed Jun 29 02:52:14 GMT 2005
My sh shell script ability is not that good.
Have 2 simple coding problems.
How do I code a statement to subtract one from a field.
$rulenum = $rulenum - 1
$rulenum = '$rulenum - 1'
$rulenum = $rulenum - $one
$rulenum='$rulenum - $one'
None of that works. must really be simple.
I also have this line
inruleno=`ipfw list | sed -n -e "s/00\([0-9]*\) $inblock/\1/p"`
This works ok, the search argument is s/00\ but that is not good enough
because the number can be 0 to 65535. The sed -n -e "s/00\([0-9]*\ needs to
be changed to just return the first word.
Thanks for any help you can give.
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