comment on

This html file uses this code

<BODY>
This is the Monitor Script<BR><BR>
<FORM NAME="myForm" ACTION=monitor.pl METHOD="POST">
<TABLE CELLPADDING=2 CELLSPACING=0>
<TR><TD WIDTH=50>Start a new log:</TD><TD>
<SELECT NAME="new">
    <OPTION>TRUE
    <OPTION>FALSE
</SELECT></TD><TD>number of rows on the page:</TD><TD>
<SELECT NAME="numofr">
    <OPTION>4
    <OPTION>5
    <OPTION>6
    <OPTION>7
    <OPTION>8
    <OPTION>9
    <OPTION>10
    <OPTION>20
    <OPTION>50
    <OPTION>100
</SELECT></TD>
<TD>Time Interval (approx sec(s)):</TD><TD>
<SELECT NAME="timers">
    <OPTION>1
    <OPTION>2
    <OPTION>4
    <OPTION>5
    <OPTION>7
    <OPTION>9
    <OPTION>10
    <OPTION>20
    <OPTION>50
    <OPTION>100
</SELECT></TD>

</TR>
</TR>
<TR><TD COLSPAN=2><INPUT TYPE=SUBMIT VALUE="GO"></TD></TR>
</TABLE>
</FORM>   
</BODY></HTML>
[download]

The PERL Script looks like:

#!/usr/bin/perl

require "cgi-lib.pl";

ReadParse(*in);

$goodcolor="GREEN";
$medcolor="ORANGE";
$badcolor="RED";
$old="history.txt";
$numofrows=8;
$startfile="time.txt";
$timing=5;

if($in{numofr} >= 1)
{
    $numofrows=$in{numofr};
}
if($in{timers} >= 1)
{
    $timing=$in{timers};
}


@months = ('Jan','Feb','Mar','Apr','May','June',
         'July','Aug','Sept','Oct','Nov','Dec');

@days = ('Sun','Mon','Tue','Wed','Thu','Fri','Sat');

($sec,$min,$hour,$mday,$mon,$year,$wday) =(localtime(time))[0,1,2,3,4,
+5,6];
$year=$year+1900;

$date = " $days[$wday], $months[$mon]/$mday/$year $hour:$min:$sec";
$date2 = " $hour:$min:$sec";

$loada=`more /proc/loadavg`;

open(OLDPAGE, $old);
$filesize = -s OLDPAGE;
read(OLDPAGE, $oldpage, $filesize);
close(OLDPAGE);

open(OLDPAGE2, $startfile);
$filesize = -s OLDPAGE;
read(OLDPAGE2, $heading, $filesize);
close(OLDPAGE2);

if($in{new})
{
    $heading="This script started $date";
    open(DUMPTIME, ">$startfile");
    print DUMPTIME $heading;
    $oldpage="";
    close(DUMPTIME);
    $numofrows--;
}

$script="monitor.pl?numofr=$numofrows&timers=$timing";

my @list = split /\s+/, $loada;

if ($list[0] >= 80)
{
    $color=$badcolor;
}elsif ($list[0] >= 55){
    $color=$medcolor;
}else{
    $color=$goodcolor;
}
$fontc ="<FONT COLOR=\"$color\">";
$oldpage = "<TR>
<TD>$fontc $list[3]</TD>
<TD>$fontc $list[6]</TD>
<TD>$fontc $list[7]</TD>
<TD>$fontc $date2</TD>
</TR></FONT>\n$oldpage";

print "Content-type: text/html\n\n";
print "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"$timing;URL=$script\">";
+ 
print "<HTML><BODY><CENTER>$heading<BR><TABLE cols=4 cellpadding=10
border=1>";
print "<TR><TD>% CPU</TD><TD>run/all</TD><TD>last PID</TD><TD>Time</TD
+></TR>";
print "$oldpage";
print "</TABLE></BODY></HTML>";


my @bigarray = split /\n+/, $oldpage;
@bigarray=@bigarray[0 .. ($numofrows*6)];
open(FILEOUT2, ">$old");

foreach (@bigarray)
{    print FILEOUT2 "$_ \n";}

close(FILEOUT2);
[download]

And the text file needs to be history.txt and it needs to be read and writable.

In reply to Server Monitor via Web by BigJoe

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		`&`
	<		`<`
	>		`>`
	[		`[`
	]		`]`

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.