g to print the last four characters of $a. The problem is that ${param:-word} already has a well-defi... NOTE
While the # and % identifiers may not seem obvious, they have a convenient mnemonic. The # key ... on would have the incorrect value dave/pete/fred/bob, because the shortest instance of "anything follo... ash shell has many features that are sufficiently obscure you almost never see them used. One of the p
