Sponsored Content
Top Forums Shell Programming and Scripting while loop and variables in shelll script... Post 33632 by chris55 on Monday 13th of January 2003 12:12:10 PM
Old 01-13-2003
#!/bin/sh
counter=0
x=0
cat file | while read LINE
do
echo $LINE
let x=$x+1
echo $x (increments like it's supposed to)
done

echo the $x (returns 0)


Can someone explain how to get the variable outside the loop to refelct the variable inside the loop?
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Is there a better way I could have run this loop. (For loop with two variables)

Sorry for such a dreadful title, but I'm not sure how to be more descriptive. I'm hoping some of the more gurutastic out there can take a look at a solution I came up with to a problem, and advice if there are better ways to have gone about it. To make a long story short around 20K pieces of... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

2. Shell Programming and Scripting

Using variables created sequentially in a loop while still inside of the loop [bash]

I'm trying to understand if it's possible to create a set of variables that are numbered based on another variable (using eval) in a loop, and then call on it before the loop ends. As an example I've written a script called question (The fist command is to show what is the contents of the... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

3. Shell Programming and Scripting

SH: two variables in for loop

Hi, say I have a simple sh script like this: for i in a b c d do for j in 1 2 3 4 do echo "$i $j" done done and the output is a 1 a 2 a 3 a 4 b 1 (20 Replies)
Discussion started by: marcpascual
20 Replies

4. Shell Programming and Scripting

Write shelll script to read file location

hi all i have a problem how to read file location..I read file as FILE=/home/tmp/new.file.but t is not useful for me.But i want my script read file location where the file is and copy in directory at boot time. Every time of booting files are copied in respective folder.please help !!!!:) (2 Replies)
Discussion started by: shubhig15
2 Replies

5. Shell Programming and Scripting

Need help in for loop with 2 variables

Hi, I need help on for loop need to add domain and IP In domain list 1.com 2.com 3.com In Ip list 1.1.0.1 1.2.0.1 1.3.0.1 1.com 1.1.0.1 2.com 1.2.0.1 3.com 1.3.0.1 I need to excute this command (4 Replies)
Discussion started by: ranjancom2000
4 Replies

6. Shell Programming and Scripting

Help with a For loop and variables

Greetings. I'm completely new to shell scripting and quickly trying to catch on. Here's my scenario: I have a text file, named ip.txt, containing IP addresses. I want to automatically perform a whois query on each address in the file, search the output for the country, and then put both the IP... (4 Replies)
Discussion started by: molnir
4 Replies

7. Shell Programming and Scripting

for loop with 2 variables

i am having a file contants as below my requirement is for file in `awk -F "," '{print $8,$9}'` <temp.txt echo "$file" echo "$file">test.txt a=`awk -F "," '{print $1}' `<test.txt b=`awk -F "," '{print $2}' `<test.txt but script reads , i want both the vales for further... (5 Replies)
Discussion started by: sagar_1986
5 Replies

8. Shell Programming and Scripting

Need to loop three variables

Hi, I have a out from a command i need to grep a report. For that i need loop 3 variable for that. How i can loop need help. Symmetrix ID : 123456 Masking View Name : Host16 Last updated at : 04:13:06 PM on Thu Mar 17,2011 Initiator Group Name : Host16 Host... (3 Replies)
Discussion started by: ranjancom2000
3 Replies

9. Shell Programming and Scripting

Loop through variables

I am pretty new to Unix. Trying to pick up some slack while a coworker is out on vacation. Basically the script is working fine however when I go through the testing phase and have to make mods it is a pita. Here is an example of what I have #!/bin/ksh if then echo... (8 Replies)
Discussion started by: biobill
8 Replies

10. Shell Programming and Scripting

Help with variables in loop

Hello, please assist: users="test1 test2" keytest1="abcd" keytest2="dbcd" for i in $users do echo "$key${i}" > fileout done So, my objective is to take the current user (ie test1) in loop and echo its associated keyname (ie keytest1) variable to a file. The echo... (2 Replies)
Discussion started by: motdman
2 Replies
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.11 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 06:50 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy