H3C Technologies H3C S7500E Series Switches - Manual (Page 14)

1-3
Convention Description
[ x | y | ... ] *
Optional alternative items are grouped in square brackets and separated by
vertical bars. Many or none can be selected.
&<1-n> The argument(s) before the ampersand (&) sign can be entered 1 to n times.
# A line starting with the # sign is comments.
The keywords of H3C command lines are case insensitive.
Take the clock datetime time date command as an example to understand the command meaning
according to Table 1-1 .
Figure 1-2 Read command line parameters
For example, you can type the following command line at the CLI of your device and press Enter to set
the device system time to 10 o’clock 30 minutes 20 seconds, February 23, 2010.
<sysname> clock datetime 10:30:20 2/23/2010
You can read any command that is more complicated according to Table 1-1 .
Undo Form of a Command
The undo form of a command typically restores the default, disables a function, or removes a
configuration.
Almost every configuration command has its undo form.
For example, the info-center enable command is used to enable the information center, while the
undo info-center enable command is used to disable the information center.
CLI View Description
To facilitate CLI usage, commands are grouped into different classes by function. To use a command,
you must enter the class (view) of the command.
CLI views adopt a hierarchical structure, as shown in Figure 1-3 .