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I'm trying to use some SysRq commands on Ubuntu. I use the following to enable SysRq commands - echo "1" > /proc/sys/kernel/sysrq and then I want to see help by writing h into sysrq-trigger under /proc, but I can't see nothing on stdout.

You can see a lot more information that could help me and you with solving my problem here

$ echo "1" > /proc/sys/kernel/sysrq
$ echo "h" > /proc/sysrq-trigger

Any suggestions?

perror undefined variable un
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1 Answers1

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When writing to /proc/sysrq-trigger, it actually logs the output of the commands, so I solved my problem by simply using dmesg which is used to display system logs. There you can find the output of these commands.

perror undefined variable un
  • 21