Shell Programming and Scripting

I have a file name :

Code:

 var=UsrAccChgRpt

I want to make them upper case.
Tried:

Code:

 $var | tr [a z A Z]

Error:

Code:

tr: Invalid combination of options and Strings.
Usage: tr [ [-c|-C] | -[c|C]ds | -[c|C]s | -ds | -s ] [-A] String1 String2
tr { -[c|C]d | -[c|C]s | -d | -s } [-A] String1

Could you please help. I am using AIX Bourne shell

Perhaps this link will help point you in the right direction.
Converting to Uppercase

Your request is not at all clear. You say you have a file name, but what you have shown us is a variable containing a string (which might or might not be a file name). You then attempt to execute a file with the name stored in that string and use the tr utility to modify the output produced by executing that file.

joeyg gave you a pointer to a thread that shows some ways to use tr or awk or ksh to convert a string read from standard input or the contents of a variable to upper case. But I have no idea what you are trying to with $var, so I don't know if any of those suggestions will help.