List the contents of the files.tar tar archive by filetype.
You can use this short tar command.
tar -tvf files.tar --include '*.svg'
Or this more verbose tar command.
tar --list --verbose --file files.tar --include '*.svg'
The commands above will list only the *.svg files in the files.tar tar archive.
-t or --list tells tar to extract an existing archivev or --verbosetells tar to produce verbose outputf or --filetells tar that the next parameter will be the tar file to create, extract, append to, list, etc.include tells tar to process files or directories that match the specified pattern