Make human readable dmesg dates.

dmesg-human.pl

#!/usr/bin/perl
 
use strict;
use warnings;
 
my @dmesg_new = ();
my $dmesg = "/bin/dmesg";
my @dmesg_old = `$dmesg`;
my $now = time();
my $uptime = `cat /proc/uptime | cut -d"." -f1`;
my $t_now = $now - $uptime;
 
sub format_time {
  my @time = localtime $_[0];
  $time[4]+=1;    # Adjust Month
  $time[5]+=1900;    # Adjust Year
  return sprintf '%4i-%02i-%02i %02i:%02i:%02i', @time[reverse 0..5];
}
 
foreach my $line ( @dmesg_old )
{
  chomp( $line );
  if( $line =~ m/\[\s*(\d+)\.(\d+)\](.*)/i )
  {
  # now - uptime + sekunden
  my $t_time = format_time( $t_now + $1 );
  push( @dmesg_new , "[$t_time] $3" );
  }
}
 


print join( "\n", @dmesg_new );
print "\n";