If you want to change every line in some files then 

perl -pe's/^([[:alpha:]]+)/ uc $1 /e' -i.bak <file list>

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you can use a condition to change just some lines 
perl -pe's/^([[:alpha:]]+)/ uc $1 /e if condition' -i.bak <file list>

[download]
The original file is saved with a extention of .bak

In reply to Re^3: Changing the first word to uppercase by hipowls
in thread Changing the first word to uppercase by Anonymous Monk

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