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Home Infrastructure

Magic Tricks With the Sysreq Key

By Juliet Kemp

“Note that this is documented only on i386 on Linux, and you
need your kernel to have been compiled with the “Magic SysRq Key”
option. Find out if it has been by looking at
/proc/sys/kernel/sysrq — if it exists and contains the value 1,
all possible requests are allowed.”

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