Enabling server mode

[Patrick Smith]

>>>printf '\1\2\3' > powerup-boot
>>
>>This is again bash specific.  On my shell (tcsh) this just gives:
>>
>>gwiz% printf '\1\2\3' > powerup-boot
>>printf: \1: invalid escape
> 
> 
> As far as I can tell, it's not bash specific.

Seems to me tcsh is just broken here.  According to the Open Group 
standard, octal escapes are supposed to be interpreted.  See 
http://www.opengroup.org/onlinepubs/009695399/utilities/printf.html,
point 3 in the "EXTENDED DESCRIPTION".