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Full Discussion: Help with ksh script
Top Forums Shell Programming and Scripting Help with ksh script Post 302472664 by Chubler_XL on Wednesday 17th of November 2010 07:19:24 PM
Old 11-17-2010
Do you need zero count lines when no users are in the logfile? This solution only prints count if a user was in the file for the 15 min period, also periods are hard-coded for 15,30,45 mins past the hour.

Code:
awk -F"[: ]" 'NR==1 { T=int(($2+15)/15);;H=$1 }
{if (Q=int(($2+15)/15) != T || $1 != H) {
    printf "%02d:%02d:00 %d\n", H, T*15, length(users);
    delete users;
    H=$1;
    T=Q;
  }
  users[$4]++;
 }
END { printf "%02d:%02d:00 %s\n", H,Q*15, length(users); }' users.log

Code:
$ cat users.log
00:10:00 S478959
00:10:01 S895423
00:10:02 S990884
00:12:02 S990001
00:15:02 S990002
00:17:02 S990003
00:21:02 S990004
00:22:02 S990005
00:27:02 S990001
03:03:17 S993093
 
$ ./users.awk
00:00:00 4
00:15:00 5
03:15:00 1

Last edited by Chubler_XL; 11-17-2010 at 08:39 PM.. Reason: Fixup if no log entries for >1hr
 

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LEARN ABOUT DEBIAN

get_midi_length

get_midi_length(3alleg4)					  Allegro manual					  get_midi_length(3alleg4)

NAME

       get_midi_length - Determines the total playing time of a midi, in seconds. Allegro game programming library.

SYNOPSIS

       #include <allegro.h>

       int get_midi_length(MIDI *midi);

DESCRIPTION

       This function will simulate playing the given MIDI, from start to end, to determine how long it takes to play. After calling this function,
       midi_pos will contain the negative number of beats, and midi_time the length of the midi, in seconds.

       Note that any currently playing midi is stopped when you call this function.  Usually you would call it before play_midi, to get the length
       of the midi to be played, like in this example:

	  length = get_midi_length(my_midi);
	  play_midi(my_midi);
	  do {
	     pos = midi_time;
	     textprintf_ex(screen, font, 0, 0, c, -1, "%d:%02d / %d:%02d
",
		pos / 60, pos % 60, length / 60, length % 60);
	     rest(100);
	  } while(pos <= length);

RETURN VALUE

       Returns the value of midi_time, the length of the midi.

SEE ALSO

       load_midi(3alleg4), midi_time(3alleg4), midi_pos(3alleg4), exmidi(3alleg4)

Allegro 							   version 4.4.2					  get_midi_length(3alleg4)
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