Cisco Catalyst 2960 Command Reference Manual page 666

unset
The BOOT environment variable can also be reset by using the no boot system global configuration
command.
The ENABLE_BREAK environment variable can also be reset by using the no boot enable-break
global configuration command.
The HELPER environment variable can also be reset by using the no boot helper global configuration
command.
The CONFIG_FILE environment variable can also be reset by using the no boot config-file global
configuration command.
The HELPER_CONFIG_FILE environment variable can also be reset by using the no boot
helper-config-file global configuration command.
Examples This example shows how to reset the prompt string to its previous setting:
switch: unset PS1
switch:
Related Commands Command
set
Catalyst 2960 Switch Command Reference
A-24
Description
Sets or displays environment variables.
Appendix A Catalyst 2960 Switch Bootloader Commands
OL-8604-03