user-tools/rsysrq

   1 #!/bin/bash
   2
   3 true <<EOF
   4 =pod
   5
   6 =head1 NAME
   7
   8 rsysrq - Send SysRQ commands remotely over the network
   9
  10 =cut
  11
  12 EOF
  13
  14
  15
  16 # SysRq Help:
  17 #   loglevel(0-9)
  18 #   re(B)oot
  19 #   (C)rash
  20 #   t(E)rminate-all-tasks
  21 #   memory-(F)ull-oom-kill
  22 #   k(I)ll-all-tasks
  23 #   thaw-filesystems(J)
  24 #   secure-attention-(K)ey
  25 #   show-backtrace-a(L)l-active-cpus
  26 #   show-(M)emory-usage
  27 #   (N)ice-all-RT-tasks
  28 #   power(O)ff
  29 #   show-registers(P)
  30 #   show-all-timers(Q)
  31 #   un(R)aw
  32 #   (S)ync
  33 #   show-(T)ask-states
  34 #   (U)nmount
  35 #   force-fb(V)
  36 #   show-blocked-tasks(W)
  37 #   dump-ftrace-buffer(Z)
  38 #
  39
  40
  41 if [ $# != 3 ]; then
  42         echo "Usage: $0 host[:port] sysrq-keys sysrq-password"
  43         exit 1
  44 fi
  45
  46 expr "$1" : '.*:' >/dev/null && hostport=$1 || hostport=$1:9
  47 keys=$2
  48 password=$3
  49 ipaddr=`gethostip -d ${hostport%:*}`
  50
  51
  52 seqno=`date +%s`
  53 salt=`dd bs=12 count=1 if=/dev/urandom 2>/dev/null | openssl enc -base64`
  54 data=$keys,$seqno,$salt
  55 data=$data,`echo -n "$data,$ipaddr,$password" | sha1sum | cut -c1-40`
  56
  57
  58 echo "$data" | socat stdin udp-sendto:$hostport
  59