Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

something wrong with variables

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting something wrong with variables
# 1  
Old 01-11-2012
something wrong with variables
Hi,
I'm trying to get this simple script to work, and i don't know why it's not.

Code:
#!/bin/bash

today=$(date +"%Y%m%d")
tstamp=$(date -d "$today" "+%s")
ttal=0

cat $1 | while read each ;
do
     input=$(echo $each | cut -d " " -f4 | tr -d "{},")
     if [ $input -gt $tstamp ]; then
           vol=$(echo "scale=8; $(echo $each | cut -d " " -f2 | tr -d ",")" | bc)
           ttal=$(echo "scale=8; $ttal + $vol" | bc)
     fi
done
echo $ttal

It all works fine during the loop, the values are correct, but when i want to print the final result, I get 0.
I tried to use export ttal= ... but without success

Thanks in advance for your help!
# 2  
Old 01-11-2012
Code:

while read each
do
...
...
done < $1
echo $ttal

This User Gave Thanks to vgersh99 For This Post:
Puggs
# 3  
Old 01-11-2012
Thank you !

What if i was using tail -n 1000 instead of cat ?
Last edited by Puggs; 01-11-2012 at 04:06 PM..
# 4  
Old 01-11-2012
Save it to a temp file first.
# 5  
Old 01-11-2012
Quote:
Originally Posted by Puggs
Thank you !

What if i was using tail -n 1000 instead of cat ?
Code:
#!/bin/ksh

tail -n 1000 $1 |&
while read -p line
do
...
...
done
echo $ttal

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to pass variables into anothother variables?

Below are three variables, which I want to pass into variable RESULT1 username1=userid poihostname1=dellsys.com port1=8080 How can I pass these variables into below code... RESULT1=$((ssh -n username1@poihostname1 time /usr/sfw/bin/wget --user=sam --password=123 -O /dev/null -q... (4 Replies)
Discussion started by: manohar2013
4 Replies

2. Shell Programming and Scripting

Passing awk variables to bash variables

Trying to do so echo "111:222:333" |awk -F: '{system("export TESTO=" $2)}'But it doesn't work (2 Replies)
Discussion started by: urello
2 Replies

3. Post Here to Contact Site Administrators and Moderators

Whether anything went wrong ?

Hi could see all the post with this old color scheme ( legacy (dark) vBulletin color scheme (unsupported)) except this post, please look at the screenshot . Looks like url parsing also some problem is there getting "Page not found" error. -- Akshay --edit-- screenshot is there in album... (18 Replies)
Discussion started by: Akshay Hegde
18 Replies

4. Shell Programming and Scripting

BASH arrays and variables of variables in C++

Sometimes it is handy to protect long scripts in C++. The following syntax works fine for simple commands: #define SHELLSCRIPT1 "\ #/bin/bash \n\ echo \"hello\" \n\ " int main () { cout <<system(SHELLSCRIPT1); return 0; } Unfortunately for there are problems for: 1d arrays:... (10 Replies)
Discussion started by: frad
10 Replies

5. Shell Programming and Scripting

Running a script with multiple variables like 25 variables.

Hi All, i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way?? #!/bin/ksh ##script is sample.ksh age=$1 gender=$2 class=$3 . . .... (3 Replies)
Discussion started by: Lakshman_Gupta
3 Replies

6. Shell Programming and Scripting

Why result is wrong here ? whether break statement is wrong ?

Hi ! all I am just trying to check range in my datafile pls tell me why its resulting wrong admin@IEEE:~/Desktop$ cat test.txt 0 28.4 5 28.4 10 28.4 15 28.5 20 28.5 25 28.6 30 28.6 35 28.7 40 28.7 45 28.7 50 28.8 55 28.8 60 28.8 65 28.1... (2 Replies)
Discussion started by: Akshay Hegde
2 Replies

7. Programming

How to convert byteArray variables to HexaString variables for Linux?

Hello everybody, I am having problem in converting byte array variables to Hexa String variables for Linux. I have done, converting byte array variables to Hexa String variables for Windows but same function doesn't work for linux. Is there any difference in OS ? The code for Windows is given... (2 Replies)
Discussion started by: ritesh_163
2 Replies

8. Shell Programming and Scripting

naming variables with variables

Hello, FIRST QUESTION: I am writing a script in which a query is taken at the beginning of the script to be later used at the end. In the query, variables are generated from a loop, and I would like to assign the variable NAME (not value) with an appended 1, 2, 3, 4.....n. The number of... (2 Replies)
Discussion started by: Allasso
2 Replies

9. Shell Programming and Scripting

Anything wrong with this

Does anyone see anything wrong with this. #getInfraFiles() #{ # cd Infra/$DAY # rm * # /usr/bin/ftp -i -n $LINE << cmd # user "$USER" "$PASSWD" # cd $INFRAPATH # binary # mget * # bye #} besides that its commented out (4 Replies)
Discussion started by: rcunn87
4 Replies

10. UNIX for Dummies Questions & Answers

Using Variables to Set Other Variables

I have a script that I'm trying to shorten (below) by removing repetitive code. if ] then commodity_ndm_done=Y fi if ] then customer_ndm_done=Y fi if ] then department_ndm_done=Y fi if ] then division_ndm_done=Y fi (3 Replies)
Discussion started by: superdelic
3 Replies
Login or Register to Ask a Question