I've a tar (gz, bzip) file and want to see its content, but not recursively.
This is: The "first level" in the file.
I already know how to see content:
tar -ztf file.tar.gz
But it's recursive!!
That's almost certainly a GNU tar-ism. But who doesn't use GNU tar, right? (Another fun fact: in recent versions of GNU tar, you don't need the 'z' or 'j' to list or uncompress .gz or .bz files -- it autodetects those and it just works.)
This should show top-level directories as well as just files that include the dot character: