Information Technology

Appendix B: Linux and DOS Information

Linux Commands

&—when used after a command, it launches the command in the background.

! (bang)—used to retrieve a command from the history list. !! retrieves the last instruction, !#, where # is a number that retrieves the instruction # from the list.

~—used to denote a user’s home directory. When used as ~username, it denotes username’s home directory.

.—used to indicate the current directory, as in cp ~foxr/* . (copy all files in foxr’s home directory to this directory).

..—used to indicate the parent directory, as in cd ../.. (move up two levels in the file system).

apropos string—display all commands whose description field contain the given string; used to identify a command when the name of the command ...