Get time in milliseconds without an installing an extra package?
Time::HiRes has been part of the core since Perl 5.7.3. To check for its availability, check for the Perl version, perl -v, or try to use it with perl -e 'use Time::HiRes;', both from the command line.
Sample usage:
use Time::HiRes qw/ time sleep /;my $start = time;sleep rand(10)/3;my $end = time;print 'Slept for ', ( $end - $start ) , "\n";To build on Konerak's comment, if it isn't there or it cannot be used, use native Linux commands via backticks:
sub time_since_epoch { return `date +%s.%N` }print time_since_epoch;