Hi
On 17/10/06, Sonia Hamilton <[EMAIL PROTECTED]> wrote:
I've written a small script that archives email - it works, but I was
wondering if there's any better way to write it (apart from using
another language).
Damn.
The script is:
> for i in z_bak:7 root:14 y_spam_definite:56 ; do
> mydir=${i%:*}
> mydays=${i#*:}
$mydir is the directory to cleanup, $mydays is the # of days I want to
keep email. Is there any better way of writing the for loop to go thru
the 2 sets of values?
Not that I can see - mildly curious to know if there is. AFAIK Bash
only has 1-dimensional arrays (in my version), certainly no hashes.
The above script looks quite compact along with those annoying
substitution operators that I can never remember.
I tend to use 'case' if I'm shelling - which is far more verbose:
for mydir in z_bak root y_spam_definite ; do
case $mydir in
z_bak)
mydays=7
;;
foo|bar|baz)
mydays=100
;;
*)
echo "$0: Bad mail directory used : '$mydir'" >&2
;;
esac
done
----
Here is a crazy version using arrays:
expires=(
z_bak:7
root:14
y_spam_definite:56
)
for (( i=0; i<${#expires[*]}; i++ )); do
j=${expires[$i]}
mydir=${j%:*}
mydays=${j#*:}
done
It's kinda lost some clarity at this point (!). What I was trying to
do was to put the delete settings at the top in a simple list for easy
configuration.
(I've used arrays before in a script which stores my sometimes
numerous working directories in a file so that I can call these up and
jump back and forth between locations more easily)
Daniel.
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