CLI Help Features
If you printed the Cisco IOS Command Reference documents, you would end up with a
stack of paper several feet tall. No one should expect to memorize all the commands—and
no one does. You can use several very easy, convenient tools to help remember commands
and save time typing. As you progress through your Cisco certifications, the exams will
cover progressively more commands. However, you should know the methods of getting
command help.
Table 4-2 summarizes command-recall help options available at the CLI. Note that, in the
first column, command represents any command. Likewise, parm represents a command’s
parameter. For example, the second row lists command ?, which means that commands such
as show ? and copy ? would list help for the show and copy commands, respectively.
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