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It did not work. But, on first line I use /bin/ksh. So, I added /bin/ksh93:

VersionM-12/28/93e

Should I start my Korn shell scripts with ksh93?

Thanks everyone for the responses. I have tried freelong's solution and that worked for me. I will also try some of the others to see if they will fit into my design.

I am starting to see...

I am running AIX 5.3 using the Korn Shell. I am reading file names from a file, as an example:

E0801260
E0824349
E0925345
EMPMSTR

statement "num=$(expr substr "$DDNAME" 4 2)

extracts...