Sun Microsystems V20Z, V40z manual Ecl0

TABLE F-5Serial-Console Values

Character	Function
f	Forces an attach read/write.
g	Groups information.
i	Information dump.
L	Toggles logging on/off.
l?	Breaks the sequence list.
l0	Sends a break per configuration file.
l1-9	Sends a specific break sequence.
o	Re-opens the tty and log file.
p	Replays the last 60 lines.
r	Replays the last 20 lines.
s	Spy read only.
u	Shows the host status.
v	Shows the version information.
w	Shows who is logged on to this console.
x	Shows the console baud information.
z	Suspends the connection.
<cr>	Ignores/aborts the command.
?	Prints this message.
^R	Replays the last line.
\ooo	Sends the character by octal code.

Under certain circumstances, it might be necessary to send a serial-break sequence to the platform OS (for example, to simulate the SysRq key when CONFIG_MAGIC_SYSRQ is defined and enabled in a Linux kernel).

To perform this operation, use the following sequence:

^Ecl0

(Control-E, followed by the lowercase letter “C”, the lowercase letter “L” and the digit “0”.)

The platform console command responds by displaying the string [halt sent], confirming that the break sequence has been generated.

In the event that console output becomes corrupted, ^Ecd ^Eco usually restores proper operation; this problem is normally due to flow-control issues.

136 Sun Fire V20z and Sun Fire V40z Servers, Server Management Guide • May, 2004