Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Problem with variable expension using for loop.
Top Forums Shell Programming and Scripting Problem with variable expension using for loop. Post 302205795 by ejdv on Monday 16th of June 2008 09:50:55 AM
Old 06-16-2008
Problem with variable expension using for loop.
Hi,

I have a problem with expending variables when used in a for loop:

#!/bin/ksh
VAR1=aaa
VAR2=bbb
VAR3=ccc

for ITEM in VAR1 VAR2 VAR3
do
echo "${ITEM}"
done

This gives:

VAR1
VAR2
VAR3

but I want:

aaa
bbb
ccc

Can it be done ?
How ?

Thanks in advance,

ejdv
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Variable problem in for loop with if statement

Hi, Again a little problem. Do not understand good why an empty string is not detected. Here is the program: #!/bin/ksh APR=`date | grep Apr | awk '{print $2$3}'` MAY=`date | grep May | awk '{print $2$3}'` JUN=`date | grep Jun | awk '{print $2$3}'` echo "Variable Apr has value:... (6 Replies)
Discussion started by: ejdv
6 Replies

2. Shell Programming and Scripting

problem with for loop and a variable with spaces...Hi

Hi there, I don't understand the following behavior: toto:~$ for word in un "deux trois"; do echo $word; done un deux trois toto:~$ sentence='un "deux trois"' toto:~$ for word in $sentence; do echo $word; done un "deux trois" toto:~$ sentence="un 'deux trois'" toto:~$ for word in... (10 Replies)
Discussion started by: chebarbudo
10 Replies

3. Shell Programming and Scripting

Bourne Shell - Problem with while loop variable scope.

Hello I am having issues with a script I'm working on developing on a Solaris machine. The script is intended to find out how many times a particular user (by given userid) has logged into the local system for more than one hour today. Here is my while loop: last $user | grep -v 'sshd'... (7 Replies)
Discussion started by: DaveRich
7 Replies

4. Shell Programming and Scripting

[SHELL: /bin/sh] For loop using variable variable names

Simple enough problem I think, I just can't seem to get it right. The below doesn't work as intended, it's just a function defined in a much larger script: CheckValues() { for field in \ Group_ID \ Group_Title \ Rule_ID \ Rule_Severity \ ... (2 Replies)
Discussion started by: Vryali
2 Replies

5. Shell Programming and Scripting

printing variable with variable suffix through loop

I have a group of variables myLINEcnt1 - myLINEcnt10. I'm trying to printout the values using a for loop. I am at the head banging stage since i'm sure it has to be a basic syntax issue that i can't figure out. For myIPgrp in 1 2 3 4 5 6 7 8 9 10; do here i want to output the value of... (4 Replies)
Discussion started by: oly_r
4 Replies

6. UNIX for Dummies Questions & Answers

Loop and variable not exactly variable: what's wrong

Hello guys, This truly is a newbie question. I'm trying to make a loop to execute simultaneous commands indefinitely while using variable. Here is how my mess looks like (this is just an example): #!/bin/bash IP=`shuf -n 1 IP.txt` # I figured this would be easier to select random lines... (4 Replies)
Discussion started by: bobylapointe
4 Replies

7. Shell Programming and Scripting

Array Variable being Assigned Values in Loop, But Gone when Loop Completes???

Hello All, Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....? I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping through a string containing some of these "Illegal Characters". Now... (5 Replies)
Discussion started by: mrm5102
5 Replies

8. Shell Programming and Scripting

[Solved] How to increment and add variable length numbers to a variable in a loop?

Hi All, I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I... (5 Replies)
Discussion started by: danish0909
5 Replies

9. Shell Programming and Scripting

String variable concatenation through loop problem

Hi Team!! Please can anyone tell me why the following line does not work properly? str3+=$str2 it seems that str3 variable does not keep its value in order to be concatenated in the next iteration! Thus when i print the result of the line above it returns the str2 value What i want to do is to... (8 Replies)
Discussion started by: paladinaeon
8 Replies

10. UNIX for Dummies Questions & Answers

Awk: problem for loop through variable

Hi, input: AAA|1 my script (the function is just an example): gawk 'BEGIN{FS=OFS="|"} function repeat(str, n, rep, i){ for(i=1; i<=n; i++) rep=rep str return rep } { variable_1=repeat($1,$2) variable_2=repeat($1,$2+1) variable_3=repeat($1,$2+3) ... (5 Replies)
Discussion started by: beca123456
5 Replies

LEARN ABOUT REDHAT

visualofccc

DisplayOfCCC(3X11)						  XLIB FUNCTIONS						DisplayOfCCC(3X11)

NAME

       DisplayOfCCC, VisualOfCCC, ScreenNumberOfCCC, ScreenWhitePointOfCCC, ClientWhitePointOfCCC - Color Conversion Context macros

SYNTAX

       DisplayOfCCC(ccc)
	    XcmsCCC ccc;

       VisualOfCCC(ccc)
	    XcmsCCC ccc;

       ScreenNumberOfCCC(ccc)
	    XcmsCCC ccc;

       ScreenWhitePointOfCCC(ccc)
	    XcmsCCC ccc;

       ClientWhitePointOfCCC(ccc)
	    XcmsCCC ccc;

ARGUMENTS

       ccc	 Specifies the CCC.

DESCRIPTION

       The DisplayOfCCC macro returns the display associated with the specified CCC.

       The VisualOfCCC macro returns the visual associated with the specified CCC.

       The ScreenNumberOfCCC macro returns the number of the screen associated with the specified CCC.

       The ScreenWhitePointOfCCC macro returns the screen white point of the screen associated with the specified CCC.

       The ClientWhitePointOfCC macro returns the client white point of the screen associated with the specified CCC.

SEE ALSO

       XcmsCCCOfColormap(3X11), XcmsConvertColors(3X11), XcmsCreateCCC(3X11), XcmsDefaultCCC(3X11), XcmsSetWhitePoint(3X11)
       Xlib - C Language X Interface

X Version 11							    Release 6.6 						DisplayOfCCC(3X11)
All times are GMT -4. The time now is 12:48 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy