Users Guide

Using the CLI 226
command syntax requirements and in some instances parameters required to
complete the command. The standard command to request context-sensitive
help is the <?> key.
Two instances where the help information can be displayed are:
• Keyword lookup — The <?> key is entered in place of a command. A list
of all valid commands and corresponding help messages is displayed.
• Partial keyword lookup — A command is incomplete and the <?> key is
entered in place of a parameter. The matched parameters for this
command are displayed.
The following features and conventions are applicable to CLI command entry
and editing:
• History Buffer
• Negating Commands
• Show Command
• CLI Output Filtering
• Command Completion
• Short Form Commands
• Keyboard Shortcuts
• Parameters
• Command Scripting
• CLI Command Notation Conventions
• Interface Naming Conventions
History Buffer
Every time a command is entered in the CLI, it is recorded in an internally
managed Command History buffer. Commands are stored in the buffer,
which operates on a First In First Out (FIFO) basis. These commands can be
recalled, reviewed, modified, and reissued. This buffer is not preserved after
switch resets.