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harsh vardhan
Asked: 2018-08-27 19:21:41 +0800 CST

Changing first letter of a filename to uppercase

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How can one change the first letter of a filename to uppercase using a command line?
IS there any command line to do so?

command-line filename

1 Answers

  1. Using the rename command:

    rename -n 's/./\U$&/' *
    • -n only shows what changes will be made. After you verify the changes, run without -n to actually rename the files.
    • s/./\U$&/: substitutes the first character (.) with the uppercase (\U) of whatever was matched ($&).

    Example:

    $ ls
bar  foo
$ rename -n 's/./\U$&/' *
rename(bar, Bar)
rename(foo, Foo)
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