The most common ways cats are exposed to marijuana is by inhaling smoke or ingesting dried marijuana. Although people who have experimented with smoking catnip became happy and relaxed, cats should not be forced to smoke any substance.
File names in Linux were 14 bytes long in earlier Unix version. But The modern Linux system has 255 bytes for file names. As a character requires 1 byte, The length becomes 255 characters. Also the folders are treated as files in Linux system.
I'm not sure what the maximum file name length can be (for ext4), but it's more dependent on the file system, than Linux itself. On FAT32, I think it is 255 characters. You probably don't ever actually need a file name that long.