What is this ? $^T

Noloz has asked for the wisdom of the Perl Monks concerning the following question:

Hello!

I recently started learning Perl. Looking at a script I have the following expression

my $rand = $^T; and I do not know what $^T means or stands for. The code continues and it generates an R file

open(Out1, “>$rand".".R"); 
print Out1 "source('$Bin/varNumber2Rel.R')\n";
print Out1 "varNumber2Rel('".$options{'o'}.".varNumber'".", ".$options
+{'P0Cutoff'}.", ".$options{'p'}.")";
close(Out1);
[download]

I hope you can help me! Thank you!

Comment on What is this ? $^T Select or Download Code

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Re: What is this ? $^T by karlgoethebier (Abbot) on May 05, 2015 at 07:42 UTC
`$BASETIME` "The time at which the program began running, in seconds since the epoch (beginning of 1970)." See perlvar as well as English for details. Edit: Links added. Regards, Karl «The Crux of the Biscuit is the Apostrophe»	[reply] [d/l]
Re: What is this ? $^T by Corion (Patriarch) on May 05, 2015 at 07:41 UTC
perlvar lists all the variables that have special meaning in Perl.	[reply]
Re: What is this ? $^T by AnomalousMonk (Archbishop) on May 05, 2015 at 12:45 UTC
See also from your friendly, neighborhood command line: `c:\@Work\Perl\monks>perldoc -v "$^T" $BASETIME $^T The time at which the program began running, in seconds si +nce the epoch (beginning of 1970). The values returned by the +-M, -A, and -C filetests are based on this value.` [download] Give a man a fish: `<%-(-(-(-<`	[reply] [d/l] [select]
Re: What is this ? $^T by vinoth.ree (Monsignor) on May 05, 2015 at 12:32 UTC
`$^T` - This variable holds the start time of the program in seconds since the epoch. `END { print "The program ran for ", time() - $^T, " seconds\n" }` *All is well. I learn by answering your questions...*	[reply] [d/l] [select]


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