Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

variable under variable

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting variable under variable
# 1  
Old 09-05-2006
variable under variable
Hello,

In korn-shell, I want to call a variable formed by an other variable, is it possible ? Smilie

toto=tata ; export toto
tata_tmp=`pwd` ; export tata_tmp

pwd must be find with something like echo ${${toto}_tmp} => it doesn't work Smilie

TY for your help
# 2  
Old 09-05-2006
What exactly are you trying to do?
# 3  
Old 09-05-2006
build the variable name from an other variable

for exemple :
AA_TOP=/tmp/my_dir/AA
AB_TOP=/tmp/my_dir/AB
AC_TOP=/tmp/my_dir/AC

echo "Value : \c" ; read my_value # is AA or AB or AC

Then, I want to call ${my_value}_TOP to set the good directory.
# 4  
Old 09-05-2006
Code:
echo "value: \c"; read myvalue
cd "$myvalue"_TOP

# 5  
Old 09-06-2006
Try...
Code:
 eval cd \$${my_value}_TOP

# 6  
Old 09-06-2006
Quote:
Originally Posted by jim mcnamara
Code:
echo "value: \c"; read myvalue
cd "$myvalue"_TOP


TY Jim but I know that, it's just a exemple, my target is to use $AA_TOP in a program.
# 7  
Old 09-06-2006
Quote:
Originally Posted by Ygor
Try...
Code:
 eval cd \$${my_value}_TOP

TY Ygor, it works to use cd but have you got an idea to use this variable in a program ?
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Passing variable as input & storing output in other variable

I have a below syntax its working fine... var12=$(ps -ef | grep apache | awk '{print $2,$4}') Im getting expected output as below: printf "%b\n" "${VAR12}" dell 123 dell 456 dell 457 Now I wrote a while loop.. the output of VAR12 should be passed as input parameters to while loop and results... (5 Replies)
Discussion started by: sam@sam
5 Replies

2. 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

3. Red Hat

How to pass value of pwd as variable in SED to replace variable in a script file

Hi all, Hereby wish to have your advise for below: Main concept is I intend to get current directory of my script file. This script file will be copied to /etc/init.d. A string in this copy will be replaced with current directory value. Below is original script file: ... (6 Replies)
Discussion started by: cielle
6 Replies

4. Shell Programming and Scripting

Variable not found error for a variable which is returned from stored procedure

can anyone please help me with this: i have written a shell script and a stored procedure which has one OUT parameter. now i want to use that out parameter as an input to the unix script but i am getting an error as variable not found. below are the unix scripts and stored procedure... ... (4 Replies)
Discussion started by: swap21783
4 Replies

5. Shell Programming and Scripting

Not able to store command inside a shell variable, and run the variable

Hi, I am trying to do the following thing var='date' $var Above command substitutes date for and in turn runs the date command and i am getting the todays date value. I am trying to do the same thing as following, but facing some problems, unique_host_pro="sed -e ' /#/d'... (3 Replies)
Discussion started by: gvinayagam
3 Replies

6. Shell Programming and Scripting

Split variable length and variable format CSV file

Dear all, I have basic knowledge of Unix script and her I am trying to process variable length and variable format CSV file. The file length will depend on the numbers of Earnings/Deductions/Direct Deposits. And The format will depend on whether it is Earnings/Deductions or Direct Deposits... (2 Replies)
Discussion started by: chechun
2 Replies

7. Shell Programming and Scripting

How to define a variable with variable definition is stored in a variable?

Hi all, I have a variable say var1 (output from somewhere, which I can't change)which store something like this: echo $var1 name=fred age=25 address="123 abc" password=pass1234 how can I make the variable $name, $age, $address and $password contain the info? I mean do this in a... (1 Reply)
Discussion started by: freddy1228
1 Replies

8. Shell Programming and Scripting

Insert a line including Variable & Carriage Return / sed command as Variable

I want to instert Category:XXXXX into the 2. line something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong: sed "2i\\${n}Category:$cat\n" Sample: Titel Blahh Blahh abllk sdhsd sjdhf Blahh Blah Blahh Blahh Should look like... (2 Replies)
Discussion started by: lowmaster
2 Replies

9. Shell Programming and Scripting

Sed variable substitution when variable constructed of a directory path

Hello, i have another sed question.. I'm trying to do variable substition with sed and i'm running into a problem. my var1 is a string constructed like this: filename1 filerev1 filepath1 my var2 is another string constructed like this: filename2 filerev2 filepath2 when i do... (2 Replies)
Discussion started by: alrinno
2 Replies

10. Shell Programming and Scripting

ksh: A part of variable A's name is inside of variable B, how to update A?

This is what I tried: vara=${varb}_count (( vara += 1 )) Thanks for help (4 Replies)
Discussion started by: pa3be
4 Replies
Login or Register to Ask a Question