Wildcards The * wildcard The character * is called a wildcard, and will match against none or more character(s) in a file (or directory) name. For example, in your unixstuff directory, type % ls list* This will list all files in the current directory starting with list.... Try typing % ls *list This will list all files in the current directory ending with ....list The ? wildcard The character ? will match exactly one character. So ?ouse will match files like house and mouse , but not grouse . Try typing % ls ?list Filename conventions We should note here that a directory is merely a special type of file. So the rules and conventions for naming files apply also to directories. In naming files, characters with special meanings such as / * & % , should be avoided. Also, avoid using spaces within names. The safest way to name a f...