Simple Script?

[iceman4000000]

Hi everyone, I have a file containing just a column of numbers. Percentages to be precise. This file is named "temp1". I am trying to write a simple shell script that will take the last two numbers in the column and compare them. The idea is, that these numbers are produced from a cron job which measures disk space (df -k) and outputs the percentages to "temp1". I will then tail -2 temp1. The problem is, how do I compare the number values on the two lines? I'd greatly appreciate your help...

iceman

 

[abovebrd]

cmp compares to files

It may help

Syntax cmp [ -l ] [ -s ] file1 file2
Description
===========
cmp compares two files. By default, if they are different, it displays the byte and line number at which the first difference occurred. If file1 or file2 is ``-'', standard input is used.


-Danny

 

[KarveR]

I wrote a script to check diskspace on each partition and build a html page to present the info in coloured bar graphs.
If you'd like me to post it reply here please.

karv

 

[attitude]

Yes Karver,
I would like to see that. Please post your script
thanks

 

[squirrelbite]

iceman4000000,

If I'm understanding this correctly, this should work for you:

#!/bin/ksh

if [ $1 ]
then
TAIL=$(tail -2 $1)
ONE=$(echo $TAIL | awk '{print $1}')
TWO=$(echo $TAIL | awk '{print $2}')
((AVG=(ONE+TWO)/2))
echo $AVG
else
echo &quot;Usage: $0 <filename>&quot;
fi

 

[iceman4000000]

Hi Karver,

I'd love to see that script... it would be so helpful... I'm not too hot on html and am really keen to learn...

iceman4000000

 

[KarveR]

heres the script, it also requires some plain text files and a couple of 1 pixel by 1 pixel colored images to make pretty graphs.:

PS Sorry it took so long, I took a sick leave and forgot to come back and post.

This script was designed to run on 7 different machines but post each machines page to our intranet server which is why you'll find each page has a dropdown box linking to each other page.
________________________________________________________
MAIN SCRIPT
---------------

#!/bin/sh
# Site specific utilities
# Monitoring Disk useage
# written by Karv 17/01/2000
# modified 04/08/2000

set -x

# Cofigurable options START
# Values for identifying colours in html graph, and to trigger e-mail alert
DISK_FULL=95.00
LOW_SPACE=85.00
NORMAL=1.00
FINAL_DIR=wo3.woeth.com:/usr/local/apache/htdocs/rep/

#set location, page description and title 
# NB these values are changeable here as the *top.txt will become generic
DEPOT=Thornbury
SCODE=th
PAGE1=DISK_SPACE
TITLE=Disk_usage

# Set Variables
# Date
D1=`date +%d/%m/%y%n`

# Time
D2=`date +%H:%M:%S`

# Day
D3=`date +%a`

# Logfile
LOG1=hddspace.log

#Begin creating index page
	cat idle_top.txt | sed 's/DEPOT/'$DEPOT'/;s/TITLE/'$TITLE'/;s/PAGE/'$PAGE1'/;s/_/ /' | dtox > ${SCODE}_${SCODE}_diskspace.htm
	echo '<div align=&quot;center&quot;><font color=&quot;#FFFFFF&quot;><b>DATE:</b>'$D1'<b> TIME:</b>'$D2'</div></font>' >> ${SCODE}_diskspace.htm
	echo '<div align=&quot;center&quot;><table width=&quot;90%&quot; border=&quot;0&quot;><tr><td width=&quot; &quot;><div align=&quot;center&quot;><b><font color=&quot;#FFFF00&quot;><u>Partition</u></font></b></div></td><td><div align=&quot;center&quot;><font color=&quot;#FFFF00&quot;><b><u>Total</u></font></b></font></div></td><td><div align=&quot;center&quot;><font color=&quot;#FFFF00&quot;><b><u>USED</u></font></b></font></div></td><td><div align=&quot;center&quot;><font color=&quot;#FFFF00&quot;><b><u>Graph</u></font></b></font></div></td><td><div align=&quot;center&quot;><font color=&quot;#FFFF00&quot;><b><u>Percentage</u></font></b></font></div></td></tr>' >> ${SCODE}_diskspace.htm


# ***** Main section ******
# Begin, Identify diskspace
	dfspace | grep '^[^T*]' >> $$_FS
# Log space and date
	echo &quot;-------------- BEGIN LOGGING ---------------&quot; >> $LOG1
	echo &quot;*** $D1 $d2 ***&quot; >> $LOG1
	dfspace | grep '^[^T*]' >> $LOG1
	echo &quot;------------- END OF LAST LOG ---------------&quot; >> $LOG1
	echo &quot;                                             &quot; >> $LOG1
# End log
# Get drives
	DRIVES=`egrep '^' $$_FS | awk '{ print $1 }'`
	for DRIVE in $DRIVES
	do
# Identify space, used and percentage
	USED=`egrep '^'${DRIVE}'[^A-Za-z]' $$_FS | awk '{ print $5 }'`
	TOTAL=`egrep '^'${DRIVE}'[^A-Za-z]' $$_FS | awk '{ print $8 }'`
	PERCENT=`egrep '^'${DRIVE}'[^A-Za-z]' $$_FS | awk '{ print $11 }' |sed -e 's/(/ /g;s/)\./ /g'`
# Set Colours for web page

	if test &quot;$PERCENT&quot; -ge &quot;$DISK_FULL&quot; ; then
		COLOUR=&quot;#FF0000&quot;
		COLOUR2=red
				
	elif test &quot;$PERCENT&quot; -gt &quot;$LOW_SPACE&quot; ; then
		COLOUR=&quot;#66FFFF&quot;
		COLOUR2=blue
	
	elif test &quot;$PERCENT&quot; -gt &quot;$NORMAL&quot; ; then
		COLOUR=&quot;#33FF33&quot;
		COLOUR2=green
		
	fi
	
# Add drive space to html page
	echo '<tr><td width=&quot; &quot;><div align=&quot;center&quot;><font color=&quot;#FFFFFF&quot;><b>'$DRIVE'</b></font></div></td><td width=&quot; &quot;><div align=&quot;center&quot;><font color=&quot;'$COLOUR'&quot;><b>'$TOTAL'</b></font></div></td><td width=&quot; &quot;><div align=&quot;center&quot;><font color=&quot;'$COLOUR'&quot;><b>'$USED'</b></font></div></td><td><img src=&quot;'$COLOUR2.gif'&quot; width=&quot;'$PERCENT'&quot; height=&quot;10&quot;></td><td width=&quot; &quot;><div align=&quot;center&quot;><font color=&quot;'$COLOUR'&quot;><b>'$PERCENT'</b></font></div></td></tr>' >> ${SCODE}_diskspace.htm

# Option for reporting very low disk space by E-Mail tests space on /u 
# NB: other partitions will naturallybe small and near full by default
	if [ $DRIVE -eq &quot;/u&quot; ] && [ $PERCENT -gt $DISK_FULL ] ; then
# message body
		echo &quot;$DRIVE at $DEPOT has Low Disk Space, it is $PERCENT full &quot; > mailmsg.tmp
		echo &quot;***** This scan will run again in <time set to scan xx> minutes *****&quot; >> mailmsg.tmp
		echo &quot;intranet page can be found at <html addy here>&quot; >> mailmsg.tmp
# send message
		mail -s&quot;Low Disk Space alert!!! $DRIVE $DEPOT&quot; kevinh@th1.theth.com < mailmsg.tmp
		rm mailmsg.tmp
	fi	
done
# finish html
	echo '</table></div>' >> ${SCODE}_diskspace.htm
	cat idle_bottom.txt | dtox >> ${SCODE}_diskspace.htm
# tidyup
	chmod 777 *log
	chmod 777 ${SCODE}_diskspace.htm
	rm $$_FS
# Move all pages to wo3 for intranet availability
	gzip ${SCODE}_diskspace.htm
	rcp ${SCODE}_diskspace.htm.gz $FINAL_DIR
	rcmd wo3.woeth.com gzip -d $FINAL_DIR${SCODE}_diskspace.htm.gz

-------------------------------------------------------
idle_top.txt
------------------------
<html>
<head>
<title>TITLE</title>
<title>
\\Automaticlly Generated Index Page
\\For Baylis Internal Reports
\\Copyright 1999 Company Name
\\Generator Written by Karv 
</title>
<title>TITLE</title>
<meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=iso-8859-1&quot;>
<SCRIPT>
function myFunction(){
	var urlselection = document.urlform.urlpopup.selectedIndex;
	var sitename = document.urlform.urlpopup.options[urlselection].text;
	var siteurl = document.urlform.urlpopup.options[urlselection].value;
	
	{window.location.href = siteurl;}
	}
</SCRIPT>
</head>
<body bgcolor=&quot;#333399&quot; link=&quot;#0000FF&quot; vlink=&quot;#FF0033&quot; alink=&quot;#0000FF&quot;>
<div align=&quot;center&quot;> </div>
<div align=&quot;center&quot;>
  <table width=&quot;99%&quot; border=&quot;0&quot;>
    <tr> 
      <td width=&quot;135&quot;> 
        <div align=&quot;center&quot;><font face=&quot;Impact&quot; size=&quot;+6&quot; color=&quot;#FF0000&quot;>Company</font> 
        </div>
        <div align=&quot;center&quot;><font face=&quot;Times New Roman, Times, serif&quot; size=&quot;+1&quot; color=&quot;#000000&quot;>Name</font> 
        </div>
      </td>
      <td width=&quot;674&quot;> 
        <div align=&quot;center&quot;><font color=&quot;#FFFFFF&quot; face=&quot;Arial, Helvetica, sans-serif&quot;><b><i><u><font face=&quot;Times New Roman, Times, serif&quot;>DEPOT PAGE</font></u></i></b></font></div>
      </td>
      <td width=&quot;135&quot;>
	  </td>
    </tr>
  </table>
</div>
  <hr width=&quot;90%&quot;>
------------------------------------------------------
idle_bottom.txt
---------------------------------
  <p> </p>
    <p></p><FORM NAME='urlform'>
      <div align=&quot;center&quot;><font face=&quot;System&quot; color=&quot;#FFFFFF&quot;>See 
        Disk usage on</font> 
        <SELECT NAME='urlpopup' onChange=&quot;myFunction();&quot;>
          <option value=&quot;wo1_diskspace.htm&quot;> </option>
          <option value=&quot;wo1_diskspace.htm&quot;>WO1</option>
          <option value=&quot;wo2_diskspace.htm&quot;>WO2</option>
          <option value=&quot;wo3_diskspace.htm&quot;>WO3</option>
          <option value=&quot;lb_diskspace.htm&quot;>LB1</option>
          <option value=&quot;pu_diskspace.htm&quot;>PU1</option>
          <option value=&quot;wa_diskspace.htm&quot;>WA1</option>
          <option value=&quot;go_diskspace.htm&quot;>GO1</option>
          <option value=&quot;th_diskspace.htm&quot;>TH1</option>
        </SELECT>
      </div>
	</FORM>
 <div align=&quot;center&quot;>
  <table width=&quot;248&quot; border=&quot;1&quot;>
    <tr> 
      <td> 
	  <div align=&quot;center&quot;><font color=&quot;#000000&quot;><b><font color=&quot;#FF0000&quot;>© 2000 
          Company Name</font></b></font></div>
      </td>
    </tr>
  </table>
</div>
</body>
</html>

--------------------------------------

make 1 pixel x 1 pixel images and call them :
red.gif
purple.gif
green.gif
and modify the bits you need to.
Enjoy I can't have sent that email, it says from Superuser.