Multiple Substitution


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Multiple Substitution
# 1  
Old 11-15-2006
Question Multiple Substitution

Hello Guys,
I have some variables declared as below
VARIABLE1=Table
VARIABLE2=VARIABLE1

Now when I do an echo $VARIABLE2 it gives me below

atrcus303{root} #: echo $VARIABLE2
VARIABLE1

I want to echo the value of VARIABLE1 using the VARIABLE2. So I tried to the below
atrcus303{root} #: echo ${$VARIABLE2}
bash: ${$VARIABLE2}: bad substitution

Is there any way the Shell allows you to multiple substitute a variable? Smilie
# 2  
Old 11-15-2006
Quote:
Originally Posted by Mohammed
VARIABLE1=Table
VARIABLE2=VARIABLE1
How about this ?
Code:
VARIABLE1=Table
VARIABLE2=$VARIABLE1

Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Sed/awk/perl substitution with multiple lines

OSX I have been grinding my teeth on a portion of code. I am building a bash script that edits a html email template. In the template, I have place holders for SED (or whatever program is appropriate) to use as anchors for find and replace, with user defined corresponding html code. The HTML code... (3 Replies)
Discussion started by: sudo
3 Replies

2. Shell Programming and Scripting

Multiple variable substitution in a file in one go

I have a huge script which is defining variables with full path of commands in the beginning of code and using those variables in the script. For Example: ECHO=/bin/echo LS=/bin/ls SED=/bin/sed AWK=/bin/awk UNAME=/bin/uname PS=/bin/ps DATE=/bin/date GREP=/bin/grep $ECHO "hello... (1 Reply)
Discussion started by: veeresh_15
1 Replies

3. Shell Programming and Scripting

Grep from multiple patterns multiple file multiple output

Hi, I want to grep multiple patterns from multiple files and save to multiple outputs. As of now its outputting all to the same file when I use this command. Input : 108 files to check for 390 patterns to check for. output I need to 108 files with the searched patterns. Xargs -I {} grep... (3 Replies)
Discussion started by: Diya123
3 Replies

4. Shell Programming and Scripting

Multiple variable substitution in one line

Hi, I want to get content of a$i variables with one command: a1=/tmp1.log a2=/tmp2.log for i in 1 2;do log=<some code> echo $log done and get the content of a1 and a2: /tmp1.log /tmp2.log Thanks (2 Replies)
Discussion started by: gdan2000
2 Replies

5. Programming

Makefile: multiple target variable substitution

Greetings! Basically, I would like to properly handle this with gnu make: alltools: my_tool mysecond_tool mythird_tool etc_tool %_tool: dir1/%_tool.vf dir2/%_tool/subdir2/%_tool.ver <tab>@echo done %.vf: <tab>RUN_VF $* %.ver: <tab>RUN_VER $* So, if I were to do something like:... (0 Replies)
Discussion started by: Harlinator
0 Replies

6. Shell Programming and Scripting

Substitution

All, I have this text document that contains a listing(See below). What i would like to ask is how i could extract just the information i need which is the files name (CWS*****.***.gz) If anyone has any suggestions i would be very grateful. I am sure its relatively simple but i just... (6 Replies)
Discussion started by: Andyp2704
6 Replies

7. Shell Programming and Scripting

Difference between "Command substitution" and "Process substitution"

Hi, What is the actual difference between these two? Why the following code works for process substitution and fails for command substitution? while IFS= read -r line; do echo $line; done < <(cat file)executes successfully and display the contents of the file But, while IFS='\n' read -r... (3 Replies)
Discussion started by: royalibrahim
3 Replies

8. Linux

Multiple files and word substitution

Hi , I have bunch of sql file which contain UHCDEV01 in them . I want to replace all the UHCDEV01 with UHCETL01 in all the files. I have written this code which shows correct output on sh -x but doesn't change the output file . #cat change_dbname.shl #!/bin/ksh... (1 Reply)
Discussion started by: capri_drm
1 Replies

9. Shell Programming and Scripting

sed substitution and multiple lines

I have a file names 'log.txt' that looks something like this: #This is a comment /sbin/iptables -A INPUT -p tcp -s ip.of.a machine --destination-port 21 -j ACCEPT #This is the comment to read# /sbin/iptables -A INPUT -p tcp -s ip.of.a.machine --destination-port 21 -j ACCEPT I would like... (1 Reply)
Discussion started by: manouche
1 Replies
Login or Register to Ask a Question