if that's all input that you want uppercased, OFC that uc if your friend, as in: 
perl -ne 'print uc' foo_input_file
# or
perl -pe '$_ = uc' foo_input_file
# or even ...
perl -pe 's/(.+)/\U$1\E/' foo_input_file

[download]
The last example shows (again) the power of RegExps, easily giving you the (usual) ability to uppercase only some 'wanted' item from the input lines like... 
# capitalize words
perl -pe 's/\b(.)/\U$1\E/g' foo_input_file
# ...

[download]
--
AltBlue.

In reply to Re: Convert lowercase string to uppercase by AltBlue
in thread Convert lowercase string to uppercase by mr_b

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