scripted imaging - choice.exe with time parameter for "bash"

[bahdah]

Hi folks,

we use scripted imaging with a the "echo -n" choice command. with the "echo -n" command a user interaction is requiered.

my problem is, that when i send a wol-signal to our nb it runs into pxe-boot mode -> an then into scripted imaging. the first command is the echo -n one. the nb waits for user interaction, keeping that stage until someone presses a predefined key.

is there a command that if there isnt any interactions within 30 seconds, the computer reboots? just like the "choice" command for dos?

thx for your help