linux search file based on file name pattern [closed]

If you’re wanting to limit your search to the current directory, use:

find . -maxdepth 1 -mindepth 1 ! -name '*_bak'

If you want to recursively find in all directories remove the -maxdepth 1.

^{Edit in response to OP’s comment}

To get files that begin with ei and do not end with _bak use:

find . -type f -name 'ei*' -a ! -name '*_bak'