Hi!
I've been using Perl for awhile but I still have some doubts :) hopefully
you will help me to clarify some concepts :)
In particular, I have the following situation: I have an external command
that returns the following:
Virtual Disk: 1
Virtual Disk: 6
Virtual Disk: 8
Virtual Disk: 7
Virtual Disk: 5
Virtual Disk: 3
Virtual Disk: 2
Virtual Disk: 4
What I want is to have in a list only the numbers of the virtual disks ( 1,
2, ...., 7, 8).
By trial and error, I found that the following code works:
my @virtual_disks = sort map { /Virtual Disk:\s(\S+)/ } `$SSCS_CMD list -a
$storage vdisk`;
my question is, WHY IS THIS WORKING? My first idea was to use this command
instead:
my @virtual_disks = sort map { s/Virtual Disk:\s(\S+)/$1/ } `$SSCS_CMD list
-a $storage vdisk`;
but this, for some reason that I don't know, doesn't work, it returns this
list (1, 1, 1, 1, 1, 1, 1, 1) instead of (1, 2, 3, 4, 5, 6, 7, 8); can
anyone explain me why?
Thanks in advance!
JP
