Question

Which symbol is used as a shorthand for using the last argument to the previous command?

(a) %

(b) _

(c) |

(d) $

The question was posed to me during an internship interview.

My question comes from Shell Variables topic in chapter Customizing the Environment & More File Attributes of Unix

Answer 1

Right option is (d) $

To explain: Sometimes we run several commands on the same file and instead of specifying the filename, again and again, we can use $ as a shorthand. This expression signifies the last argument to the previous command. For example,