Appending "_" (underscores) to variable names

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# 1  
Old 09-27-2013
Appending "_" (underscores) to variable names


I have a file, inputs.list that contain prefixes to files that are inputs for a program


My files are of the format A_1, A_2, B_1, B_2 and so on. I am planning to run a shell script that takes each line from the above file and feed it to the script as shown below:

while read x
./ $x_1 $x_2
done < inputs.list

However this throws an error. How can I append "_" to the variable $x?

Thanks for your input!
# 2  
Old 09-27-2013
This User Gave Thanks to cjcox For This Post:
# 3  
Old 09-27-2013

additionally is robust regarding special characters.
This User Gave Thanks to MadeInGermany For This Post:
# 4  
Old 09-27-2013
Variables do not work that way.

If you are in BASH, you can do this:

echo "contents are ${!VARNAME}"

...but dynamic variable names are generally a terrible idea. They allow outside things to specify arbitrary variables in your program, making a security nightmare.
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