Is it possible to have multiple commands preceeding an unless test? I prefer to use the format

[do something] unless ([some case]);

when I am able to, but this time around, I need the [do something] to be multiple statements instead of just one. Is something like this possible: 
(print "Program Error!" && exit(0)) unless ([case is true]);

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I thought using the double &'s would allow multiple statements to be executed one after the other, but the above code prints nothing.

While I'm at it, I have a short script that replaces a specific line in a file. Is there a better way to do this than what I'll pseudo code below? 
# open the file - read
# swap the update_info=blah line to update_info=auto
my @lines = map {s/^update_info=(?:\w+)/update_info=auto/; $_ } <FILE>
+;
# close file

# open the file - write
foreach (@lines) { print TOFILE; }
# close file

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Thanks.

Title edit by tye

In reply to multiple commands before unless ? by emilford

Title:
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