Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: count average
Top Forums Shell Programming and Scripting count average Post 302199011 by in2nix4life on Sunday 25th of May 2008 04:55:52 PM
Old 05-25-2008
Hope this helps set you in the right direction:

#!/usr/bin/env perl

use strict;

# define the file
my $file = "in-file.txt";

# open the file and dump it's contents into an array
open(FILE, "<$file") or die "Unable to open $file: $!\n";
my @FILE_IN = <FILE>;
close(FILE);

# define a couple of variables we'll need
my $total;
my $average;

# loop through the file and parse out the name, id, and the average
foreach(@FILE_IN) {
chomp;
if ($_ =~ /^([0-9]+).(\w+\s\w+).(.*)/) {
print "Name: $2\n";
print "ID#: $1\n";
my @MARKS = split('\s', $3);
my $num_of_marks = $#MARKS + 1;

foreach(@MARKS) {
$total += $_;
}

my $average = $total / $num_of_marks;
# adjust %.1f to the desired number of decimal places
printf "Avg. mark: %.1f\n\n", $average;

# reset the total and average variables
# otherwise they'll be carried over
# to the next run through the loop
$total = 0;
$average = 0;
} else {
print "There was a problem!\n";
exit(1);
}
}

exit(0);
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

count average

Hi Friends, Can any one help me with count average of student marks in this file (i can not change structure of the input file): input file: 1 - student ID 2 - student name 3 - group ID 4 - teacher ID 5 - marks (numbers of marks are different) 1:John Smith:2:3:2 3 4 5 2:Mark... (1 Reply)
Discussion started by: mleplawy
1 Replies

2. Shell Programming and Scripting

Getting Sum, Count and Distinct Count of a file

Hi all this is a UNIX question. I have a large flat file with millions of records. col1|col2|col3 1|a|b 2|c|d 3|e|f 3|g|h footer**** I am supposed to calculate the sum of col1 1+2+3+3=9, count of col1 1,2,3,3=4, and distinct count of col1 1,2,3=c3 I would like it if you avoid... (4 Replies)
Discussion started by: singhabhijit
4 Replies

3. Shell Programming and Scripting

count identical strings print last row and count

I have a sorted file like: Apple 3 Apple 5 Apple 8 Banana 2 Banana 3 Grape 31 Orange 7 Orange 13 I'd like to search $1 and if $1 is not the same as $1 in the previous row print that row and print the number of times $1 was found. so the output would look like: Apple 8 3 Banana... (2 Replies)
Discussion started by: dcfargo
2 Replies

4. Shell Programming and Scripting

Count time min/max/average for ping

I am redirecting my ping output to a file. The sample output is like this: 64 bytes from xx.xx.xx.167: icmp_seq=4490 ttl=116 3.75 ms 2011Jul12- 15 40 16 64 bytes from xx.xx.xx.167: icmp_seq=4491 ttl=116 5.29 ms 2011Jul12- 15 40 17 64 bytes from xx.xx.xx.167: icmp_seq=4492 ttl=116 4.88 ms... (6 Replies)
Discussion started by: zorrox
6 Replies

5. Shell Programming and Scripting

How to find the average,min,max ,total count?

Hi , Below is my sample data,I have this 8 column(A,B,C,D,E,F,G,H) in csv file. A , B ,C ,D ,E ,F,G ,H 4141,127337,24,15,20,69,72.0,-3 4141,128864,24,15,20,65,66.0,-1 4141,910053,24,15,4,4,5.0,-1 4141,910383,24,15,22,3,4.0,-1 4141,496969,24,15,14,6,-24.0,-18... (7 Replies)
Discussion started by: vinothsekark
7 Replies

6. Shell Programming and Scripting

Compare file1 header count with file2 line count

What I'm trying to accomplish. I receive a Header and Detail file for daily processing. The detail file comes first which holds data, the header is a receipt of the detail file and has the detail files record count. Before processing the detail file I would like to put a wrapper around another... (4 Replies)
Discussion started by: pone2332
4 Replies

7. UNIX for Beginners Questions & Answers

How to count average and max respon time?

sorry i will revise first (1 Reply)
Discussion started by: fajar_3t3
1 Replies

8. UNIX for Beginners Questions & Answers

awk or sed script to count number of occurrences and creating an average

Hi Friends , I am having one problem as stated file . Having an input CSV file as shown in the code U_TOP_LOGIC/U_HPB2/U_HBRIDGE2/i_core/i_paddr_reg_2_/Q,1,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0,0,0,0... (4 Replies)
Discussion started by: kshitij
4 Replies

9. UNIX for Beginners Questions & Answers

How to find the count of IP addresses that belong to different subnets and display the count?

Hi, I have a file with a list of bunch of IP addresses from different VLAN's . I am trying to find the list the number of each vlan occurence in the output Here is how my file looks like 1.1.1.1 1.1.1.2 1.1.1.3 1.1.2.1 1.1.2.2 1.1.3.1 1.1.3.2 1.1.3.3 1.1.3.4 So what I am trying... (2 Replies)
Discussion started by: new2prog
2 Replies

LEARN ABOUT BSD

iostat

IOSTAT(1)						      General Commands Manual							 IOSTAT(1)

NAME

       iostat - report I/O statistics

SYNOPSIS

       iostat [ drives ] [ interval [ count ] ]

DESCRIPTION

       Iostat  iteratively  reports the number of characters read and written to terminals per second, and, for each disk, the number of transfers
       per second, kilobytes transferred per second, and the milliseconds per average seek.  It also gives the percentage of time the  system  has
       spent in user mode, in user mode running low priority (niced) processes, in system mode, and idling.

       To  compute this information, for each disk, seeks and data transfer completions and number of words transferred are counted; for terminals
       collectively, the number of input and output characters are counted.  Also, each sixtieth of a second, the state of each disk  is  examined
       and  a  tally  is  made	if the disk is active.	From these numbers and given the transfer rates of the devices it is possible to determine
       average seek times for each device.

       The optional interval argument causes iostat to report once each interval seconds.  The first report is for  all time since  a  reboot  and
       each subsequent report is for the last interval only.

       The optional count argument restricts the number of reports.

       If  more  than  4  disk	drives	are configured in the system, iostat displays only the first 4 drives, with priority given to Massbus disk
       drives (i.e. if both Unibus and Massbus drives are present and the total number of drives exceeds 4, then some number of Unibus drives will
       not  be	displayed in favor of the Massbus drives).  To force iostat to display specific drives, their names may be supplied on the command
       line.

FILES

       /dev/kmem
       /vmunix

SEE ALSO

       vmstat(1)

4th Berkeley Distribution					  April 29, 1985							 IOSTAT(1)
All times are GMT -4. The time now is 10:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy