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This is better than doing a "for `find ...`; do ...; done", if any of the returned filenames have a space in them, it gets mangled. This should be able to handle any files.
Of course, this only works if you have rename installed on your system, so it's not a very portable command.
This command will replace all the spaces in all the filenames of the current directory with underscores. There are other commands that do this here, but this one is the easiest and shortest.
Change files case, without modify directories, recursively.
... fucking vfat
Substitute spaces in filename with underscore, it work on the first space encountered.
This command converts filenames with embedded spaces in the current directory replacing spaces with the underscore ("_") character.
This will change all files ending in .JPG to .jpg and will work with any file extension
Note the g for global in the perl expression; without it, only the first occurrence in the name would be replaced.
Changing a file extension to a new one for all files in a directory.
Useful when you want to quickly rename a bunch of files.