Cisco IE-3000-8TC Command Reference - Page 675
unset, A string that is used as the command-line prompt in bootloader mode.
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Appendix A IE 3000 Switch Bootloader Commands unset unset Use the unset bootloader command to reset one or more environment variables. unset variable ... Syntax Description variable Use one of these keywords for variable: MANUAL_BOOT-Decides whether the switch automatically or manually boots up. BOOT-Resets the list of executable files to try to load and execute when automatically booting up. If the BOOT environment variable is not set, the system attempts to load and execute the first executable image it can find by using a recursive, depth-first search through the flash file system. If the BOOT variable is set but the specified images cannot be loaded, the system attempts to boot up the first bootable file that it can find in the flash file system. ENABLE_BREAK-Decides whether the automatic bootup process can be interrupted by using the Break key on the console after the flash file system has been initialized. HELPER-A semicolon-separated list of loadable files to dynamically load during the bootloader initialization. Helper files extend or patch the functionality of the bootloader. PS1-A string that is used as the command-line prompt in bootloader mode. CONFIG_FILE-Resets the filename that Cisco IOS uses to read and write a nonvolatile copy of the system configuration. BAUD-Resets the rate in bits per second (bps) used for the console. The Cisco IOS software inherits the baud rate setting from the bootloader and continues to use this value unless the configuration file specifies another setting. HELPER_CONFIG_FILE-Resets the name of the configuration file to be used by the Cisco IOS helper image. If this is not set, the file specified by the CONFIG_FILE environment variable is used by all versions of Cisco IOS that are loaded, including the helper image. This variable is used only for internal development and testing. Command Modes Bootloader Command History Release 12.2(44)EX Modification This command was introduced. Usage Guidelines OL-13019-01 Under normal circumstances, it is not necessary to alter the setting of the environment variables. The MANUAL_BOOT environment variable can also be reset by using the no boot manual global configuration command. Cisco IE 3000 Switch Command Reference A-23