9-18Key FunctionTabPressing Tab after entering part of a keyword enables thefuzzy help function. If finding a unique match, the systemsubstitutes the complete keyword for the incomplete one anddisplays it in the next line; when there are several matches, ifyou repeatedly press Tab, all the keywords starting with theletter that you enter are displayed in cycles. If there is no matchat all, the system does not modify the incomplete keyword anddisplays it again in the next line.When editing the command line, you can use other shortcut keys (For details, see Table 9-2) besidesthe shortcut keys defined in Table 9-4, or you can define shortcut keys by yourself. (For details, seeConfiguring CLI Hotkeys.)CLI DisplayBy filtering the output information, you can find the wanted information effectively. If there is a lot ofinformation to be displayed, the system displays the information in multiple screens. When theinformation is displayed in multiple screens, you can also filter the output information to pick up thewanted information.Filtering the output informationThe device provides the function to filter the output information. You can specify a regular expression(that is, the output rule) to search information you need.You can use one of the following two ways to filter the output information:z Input the keyword begin, exclude, or include as well as the regular expression at the commandline to filter the output information.z Input slash (/), minus (-), or plus (+) as well as the regular expression to filter the rest outputinformation. Slash (/) is equal to the keyword begin, minus (-) is equal to the keyword exclude,and plus (+) is equal to the keyword include.Keywords begin, exclude, and include have the following meanings:z begin: Displays the line that matches the regular expression and all the subsequent lines.z exclude: Displays the lines that do not match the regular expression.z include: Displays only the lines that match the regular expression.The regular expression is a string of 1 to 256 characters, case sensitive. It also supports specialcharacters as shown in Table 9-5.Table 9-5 Special characters in a regular expressionCharacter Meaning Remarks^string Starting sign, string appears only at thebeginning of a line.For example, regular expression “^user”only matches a string beginning with“user”, not “Auser”.
