You can put any number of characters between [..]
which matches any of the six letters from a to f;
and you can put something like that anywhere in a pattern
for a file name. For example,
You can also combine this with other operators such as
matches all two-letter names beginning with a or b.
How would you ask for all names, of any length, ending
You can experiment in this directory; eventually,
type the "ls" command you decide on followed by "ready".