[ Thanks to linuxaria for this link.
]
“Sometimes happen that your desktop freeze and you
cannot do anything, so the only choice is to unplug the power cord
? No, Linux has the magic SysRq key that can sync your disk and
issue a reboot of your system…and many more things.“What is the magic SysRq key?
“It is a ‘magical’ key combo you can hit which the kernel will
respond to regardless of whatever else it is doing, unless it is
completely locked up.“How to enable the magic SysRq key
“If you use a custom kernel you need to say “yes” to ‘Magic
SysRq key (CONFIG_MAGIC_SYSRQ)’ when configuring the kernel. When
running a kernel with SysRq compiled in, /proc/sys/kernel/sysrq
controls the functions allowed to be invoked via the SysRq
key.”
Web Webster has more than 20 years of writing and editorial experience in the tech sector. He’s written and edited news, demand generation, user-focused, and thought leadership content for business software solutions, consumer tech, and Linux Today, he edits and writes for a portfolio of tech industry news and analysis websites including webopedia.com, and DatabaseJournal.com.
LinuxToday is a trusted, contributor-driven news resource supporting all types of Linux users. Our thriving international community engages with us through social media and frequent content contributions aimed at solving problems ranging from personal computing to enterprise-level IT operations. LinuxToday serves as a home for a community that struggles to find comparable information elsewhere on the web.
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