comment on


open(my $fh,"<","/pathtologfile/logfile.log") or die "can not open the
+ file $!";
    my @lines = <$fh>;
    close($fh);
    my $count=0;
    for(my $i=0; $i<=$#lines;$i++)
     {
    my @pids = (`ps -ef | grep acuser | grep 2015/01/15  | grep sync_c
+md | awk '{print $2}'`) ;

}
[download]

Original node content restored below by GrandFather

Hi, I am trying to grep a particular pid(process ID) and calculate the time taken by it from a log file.

Sample Log file:
2015/01/15 11:20:01.175-05:00 14788 auser *sync_cmd 7f1fa0c08700 10.101.17.111
2015/01/15 11:26:01.175-05:00 14788 auser sync_cmd 7f1fa0c08700 10.101.17.111

2015/01/15 11:30:01.175-05:00 14790 auser *sync_cmd 7f1fa0c08700 10.101.17.111
2015/01/15 11:36:01.175-05:00 14790 auser sync_cmd 7f1fa0c08700 10.101.17.111

I am asking user to enter user name (auser) , cmd (sync_cmd) and date (2015/01/15). With these 3 parameters ,
1. I would like to grep all the process ids(14788,14790) matching the 3 parameters in an array
2. Loop through array and get time difference between *sync_cmd (start time) and sync_cmd (end time) lines from log file ('2015/01/15 11:26:01.175-05:00' - '2015/01/15 11:20:01.175-05:00'

Final Output Expected
Username : auser
cmd : sync_cmd
Date : 2015/01/15

Process ID : 14788
Start Time : 2015/01/15 11:20:01.175-05:00
End Time : 2015/01/15 11:26:01.175-05:00
Time Taken: 6 mins 20 secs

Process ID : 14790
Start Time : 2015/01/15 11:30:01.175-05:00
End Time : 2015/01/15 11:35:01.175-05:00
Time Taken: 5 mins 10 secs

Here is the code I have. How can I grep the process Id and store it an array and calculate the time taken by it?

#!/usr/bin/perl
use strict;
use warnings;
use Data::Dump qw/ddx/;


my ($username,$cmd,$date,$option);
sub main(){

  system("clear");
  system ("cls");
  print "************************************************\n";
  print "Welcome to Log Grep Tool\n"; 
  print "*************************************************\n";
    print "PRESS 1 to grep or any other key to EXIT :";    
    chomp($option=<STDIN>);
    if ($option =="1") 
        {
           
            getParameters($username,$cmd,$date);
            viewResults();               
        }
        
        else
        {
             print "Goodbye!\n";
            exit;
           
        }
   
} 

sub getParameters(){
    print "Enter the Username (Eg:auser):" ;
     chomp($username=<STDIN>);
     print "Enter the cmd (Eg:sync_cmd):" ;
     chomp($cmd=<STDIN>);
     print "Enter the date (Eg:2015/01/14):" ;
     chomp($date=<STDIN>);
     return ($username,$cmd,$date);
}

sub viewResults(){
    my @process_ids = (`cat /mnt/accurev_d1/site_slice/logs/acserver.l
+og | grep $username | grep $date | grep $cmd | more`) ;
            foreach (@pids) {
            print "$_\n";
        }
}

main();
[download]

In reply to Perl grep the process id and calculate time taken by sravs448

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