The general format for Unix commands is:
command -options arguments
is the name of some command followed by a number of options or arguments.
Options are generally single characters that represent specific options. The minus sign "-" should be entered before an option.
Type in ls and then type in ls -l
Notice that the "-l" option results in a 'long' listing showing file permissions etc..
Note that you can obtain the Manual entry for any Unix command by simply typing in:
man rmNote also that some systems have aliases set up, e.g. del for rm. However, these are not standard Unix commands, and you should be wary of them because they will not work on all Unix systems. If you want to verify that a command is standard try to obtain a Manual entry for it. The following example illustrates a non-standard Unix alias:
hercules% man del No manual entry for del. hercules%