Sponsored Content
Full Discussion: Comparing variables in awk
Top Forums Shell Programming and Scripting Comparing variables in awk Post 302338711 by Shinsuio on Tuesday 28th of July 2009 05:19:05 PM
Old 07-28-2009
Comparing variables in awk

I'm writing a shellscript that monitors the price of a watch. If the prices changes, it should email me. The body of the email will show the old price and the new price. However when I compare the two awk variables(oldprice and newprice) it always says they're not the same. The shellscript goes out and retrieves the web page source code, searches it for the price, once found it stores that price in the variable newprice. I then attempt to compare it to the old price, which comes from a file and is stored in the variable oldprice, but have problems there. I don't know if awk stores it as a string or as a float variable. I am also a little unsure about how to go about mailing myself when they are not the same. I'll appreciate any help you can give me.Smilie

Code:
#!/bin/sh

wget -qO- http://cs.actx.edu/~craddock/unix2/lab11 | awk -v oldprice=`cat pricefile` '
    /<b class="price">/ {
    getline
    newprice = $0

    if (oldprice ~ newprice) {
        print "The price is the same"
    }
    else{
        print "The price is not the same"
        system ("mail -s"The price has changed" username")
        print newprice > "pricefile"
    }
}'

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

comparing variables

I have searched and found a few threads that have dealt with this, but the examples I've tried haven't seemed to help. I am monitoring our database log for high checkpoints. I can parse out the checkpoint value which can be anywhere from zero into a 3 digit number. I set a variable to be the... (3 Replies)
Discussion started by: MizzGail
3 Replies

2. Shell Programming and Scripting

Comparing two variables

Script #!/bin/sh hardware=PC os=WindowsNET for i in `cat newservers` do x=`sudo /opt/openv/netbackup/bin/admincmd/bpplclients |grep $i |head -40 |grep $i|awk '{print $3;exit}'` if then echo "$i is already added" else echo "Need to add" fi done O/p in debug mode bash-2.05$... (3 Replies)
Discussion started by: rajip23
3 Replies

3. Shell Programming and Scripting

Comparing Variables in Perl

Hi. I have three arrays. @a=('AB','CD','EF'); @b=('AB,'DG',HK'); @c=('DD','TT','MM'); I want to compare the elements of the first two array and if they match then so some substition. I tried using the if statement using the scalar value of the array but its not giving me any output. ... (7 Replies)
Discussion started by: kamitsin
7 Replies

4. UNIX for Dummies Questions & Answers

comparing variables

im trying to compare ipaddresses. i loop through an array to see if the ip is already is in the array and if it is it should set a flag and then i wont add it to the array. but its just adding all the ipaddresses to the array if ] then ... (3 Replies)
Discussion started by: magnia
3 Replies

5. Shell Programming and Scripting

comparing variables in awk array

Hi, I am trying to sort and display the below(like) input using awk command: Input: ------ 0;A 4;A 5;A 33;A 45;A 0;B 4;B 5;B 33;B 45;B Output (desired): (5 Replies)
Discussion started by: pvamsikr
5 Replies

6. Shell Programming and Scripting

Comparing multiple variables

Hi! I've come up with a ksh-script that produces one or more lists of hosts. At the and of the script, I would like to print only those hosts that exists in all the lists. Ex. HOSTS="host1 host2 host3 host11" HOSTS="host1 host2 host4" HOSTS="host2 host11" HOSTS="host2 host5 host6 host7... (1 Reply)
Discussion started by: Bugenhagen
1 Replies

7. Shell Programming and Scripting

comparing multiple variables by 'if then'

Hi, I am a noob at shell scripting. basically I am trying to compare row counts from 8 tables in different databases. I have managed to get the row counts using awk from the spool files for both databases. now I have 16 variables with me for database 1 : $A $B $C $D $E $F $G... (3 Replies)
Discussion started by: smallville
3 Replies

8. Shell Programming and Scripting

Comparing content of two variables

I have very abstract need of "comparing two variables" and take subsequent actions. please refer to image below https://lh3.googleusercontent.com/-frNk5iA3q1c/TjI3lE0sWOI/AAAAAAAAAIE/fxzB1w07gas/script_block.JPG I have a part of script which reads a file and generates variables based on... (4 Replies)
Discussion started by: animesharma
4 Replies

9. Shell Programming and Scripting

awk comparing variables

Is there a way to compare variables in a 'awk'? I've been trying for a while and can't figure it out. I'm guessing its not possible :/ VAR=Bob awk '$3 == $VAR { print $1 }' file.txt Regards Jikuu (4 Replies)
Discussion started by: Jikuu
4 Replies

10. Shell Programming and Scripting

Comparing two variables

I have a script like this. Just couldn't get the comparison part work. Any thought? thanks, #!/usr/bin/ksh -x STEP=`echo $(basename $0 .ksh) | tr "" ""` log=/skip.log while read LINE do if then echo `date`: STEP $STEP skipped by user >> $log exit 0 fi done < $1 echo... (0 Replies)
Discussion started by: ghostmic
0 Replies
Finance::Quote::Trustnet(3pm)				User Contributed Perl Documentation			     Finance::Quote::Trustnet(3pm)

NAME
Finance::Quote::Trustnet - Obtain unit trust prices from trustnet.co.uk SYNOPSIS
use Finance::Quote; $q = Finance::Quote->new; %stockinfo = $q->fetch("uk_unit_trusts","trust-name"); # Can failover to other methods %stockinfo = $q->fetch("trustnet","trust-name"); # Use this module only. DESCRIPTION
This module obtains information about UK unit trust prices from www.trustnet.co.uk. The information source "uk_unit_trusts" can be used if the source of prices is irrelevant, and "trustnet" if you specifically want to use trustnet.co.uk. UNIT TRUST NAMES
Unfortunately there is no unique identifier for unit trust names. Therefore enough of the name should be given including spaces to yield a unique match. Trustnet sometimes uses abbreviated names, and the string given should match the abbreviation. Consult http://www.trustnet.co.uk/ut/funds/perf.asp?sort=0 to find a match for your unit trusts. Example "jupiter income" LABELS RETURNED
Information available from Trustnet may include the following labels: exchange method source name currency bid ask yield price. In case of a unit trust, "price" returns the offer (ask) price. In case of an OIEC, the unique price is returned in "bid", "ask" and "price". SEE ALSO
Trustnet website - http://www.trustnet.co.uk/ Finance::Quote::Yahoo::USA perl v5.14.2 2012-05-06 Finance::Quote::Trustnet(3pm)
All times are GMT -4. The time now is 09:17 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy