hints on shell string expansion ?
Enache Adrian
enache at rdslink.ro
Mon Jul 7 05:09:31 PDT 2003
On Mon, Jul 07, 2003 at 12:46:26AM -0700, Luigi Rizzo wrote:
> Hi,
> i need a bit of help from creative /bin/sh users...
>
> I am writing a script to generate ipfw test cases, and as
> part of the script i need to generate 'actions' which can be either
> one or more, e.g.
>
> a1="allow"
> a2="deny log"
> a3="pipe 10"
>
> Now, this works:
>
> for act in "$a1" "$a2" "$a3"; do
> echo "add $act ip from 1.2.3.4 to 5.6.7.8"
> done
>
> but i because the string of actions is used in several places,
> I would love to find a way to group actions into a single
> variable and then write something like this
>
> actions="allow 'deny log' 'pipe 10'"
> for act in $actions ; do
> echo "add $act ip from 1.2.3.4 to 5.6.7.8"
> done
Isn't this what you want ?
$ set allow "deny log" "pipe 10"
$ for act in "$@"; do echo "<$act>"; done
<allow>
<deny log>
<pipe 10>
Regards,
Adi
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