in reply to I have a folder which is having 1200 files,all the file names are have maximum of 8 character length.I need to remove last character from each of the filnames and prefix it with character "A"

rename 's/^.(\w+)\.(\w+)$/$1A.$2/' maybe. Run it with the -n option first to review it.

The rename or prename tool is shipped with perl, and occasionally very helpful.

Perl 6 - the future is here, just unevenly distributed
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