nested variables

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting nested variables
# 1  
Old 11-08-2007
nested variables

Is there any way to do variable nesting using sh?

For example:

example_1="a test string"
example_2="another test"

echo ${example_$i}

The shell reports:
sh: ${example_$i}: bad substitution

If not, maybe someone could suggest another method. Thanks in advance.

# 2  
Old 11-08-2007
$ example_1="a test string"
$ example_2="another test"
$ example_3="etc..."
$ i=2
$ eval echo \$example_$i
another test

# 3  
Old 11-08-2007
Thanks porter, I can work with that!!

# 4  
Old 07-30-2008
Many thanks from me too!!
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. 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

2. UNIX for Dummies Questions & Answers

[Solved] Nested If

I am having a problem with a nested if. I am sure I am overlooking something. I check for the existence of $Pidfl3 and it exists, o this condition I then want to check for the existence of a next file and remove it. The first if is executed, but on the second if I get test: argument expected. My... (4 Replies)
Discussion started by: Charles Swart
4 Replies

3. 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

4. Shell Programming and Scripting

Nested if else

Hi, i m trying to create script which logic is like below. if ; then x=`cat /tmp/testoutput.log | grep STOP | wc -l` y=`cat /tmp/testoutput.log | grep RUN | wc -l` if ; then echo "process stop" if ; then echo "process running " else echo "file not found" fi ----------------... (2 Replies)
Discussion started by: tapia
2 Replies

5. Shell Programming and Scripting

two while nested loops

for server in $(echo `cat /tmp/ScanHosts_${USERSNAME}.TXT`) do for portnumber in $(echo `cat /tmp/ScanPorts_${USERSNAME}.TXT`) do #echo ${server} ${portnumber} ... (3 Replies)
Discussion started by: SkySmart
3 Replies

6. Shell Programming and Scripting

Complex bash/sed, variables and nested quotes

Ok, this one isn't for everybody, it's pretty tough and I've spent a good deal of time on it without figuring it out yet. Can anybody get this script to work: #!/bin/bash cq_fname="%let outputfile="/user/cq_"$1".csv";" sed "29s/.*/\"$cq_fname\"/" >... (3 Replies)
Discussion started by: nocloud
3 Replies

7. Shell Programming and Scripting

Two variables in output file name nested for loops

I am trying to use two nested for loops to process some files and then create a new file using both variables in the output file name. I have several files in this naming style: S1_L3_all_R1.fastq S1_L3_all_R2.fastq S1_L4_all_R1.fastq S1_L4_all_R2.fastq . . S1_L8_all_R1.fastq... (3 Replies)
Discussion started by: aminards
3 Replies

8. Shell Programming and Scripting

Optimize the nested IF

Hi, I have to assign a value for a varaiable based on a Input. I have written the below code: if then nf=65 elif then nf=46 elif then nf=164 elif then nf=545 elif then nf=56 elif then (3 Replies)
Discussion started by: machomaddy
3 Replies

9. Shell Programming and Scripting

grep variables nested within grep

Help, I have a ksh script that has some variables within the grep command, I am then setting another variable that greps the variables that have greps within them. cat $WORKINGDIR/meter_list.txt | while read meter do serialnum=$(cat masterlogfile.txt | grep "$meter" | awk '{ print $19 }'... (7 Replies)
Discussion started by: srichard9
7 Replies

10. 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
Login or Register to Ask a Question