extract-portion-of-file-name

extract portion of file name

You have to extract a portion of the file name as follows:

• Assume it will start with date represented as long number
• Followed by an underscore
• You'll have then a filename with an extension
• it will always have an extra extension at the end

Inputs

1231231223123131_FILE_NAME.EXTENSION.OTHEREXTENSION

1_This_is_an_otherExample.mpg.OTHEREXTENSIONadasdassdassds34

1231231223123131_myFile.tar.gz2

Outputs

FILE_NAME.EXTENSION

This_is_an_otherExample.mpg

myFile.tar

Acceptable characters for random tests:

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-0123456789

The recommended way to solve it is using RegEx and specifically groups.