These shortcuts are used to recover or debug an unresponsive system. To use these, they must first be activated with either sysctl kernel.sysrq=1 or echo "1" > /proc/sys/kernel/sysrq. If you wish to have it enabled during boot, edit /etc/sysctl.d/99-sysctl.conf and insert the text kernel.sysrq = 1
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Take control of keyboard back from X |
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Send SIGTERM to all processes, allowing them to terminate gracefully |
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Send SIGKILL to all process, forcing them to terminate immediately |
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Sync - Flush data to disk |
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Unmount - Unmound and remount all file systems read-only |
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Reboot |
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On Lenovo laptops SysRq is often configured as Fn+S. To use it press and hold Alt then press Fn+s, release Fn and s still holding Alt followed by the keys above.
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You may need to press Ctrl along with Alt. So for example, full key shortcut would be Ctrl+Alt+SysRq+b
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Reboots Computer (specified by the symlink /usr/lib/systemd/system/ctrl-alt-del.target) |
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(F2, F3, …) Switch to n-th virtual console |
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Switch to previous virtual console |
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Switch to next virtual console |
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When Scroll Lock is activated, input/output is locked |
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Scroll console buffer up |
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Scroll console buffer down |
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Kills current task |
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Inserts an EOF |
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Pauses current task |
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Clear the screen |
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Move cursor one character to the left |
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Move cursor one character to the right |
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Move cursor one word to the left |
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Move cursor one word to the right |
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Move cursor to start of the line |
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Move cursor to end of the line |
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Cut everything from line start to cursor |
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Cut everything from the cursor to end of the line |
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Cut the current word after the cursor |
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Cut the current word before the cursor |
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Paste the previous cut text |
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Paste the second latest cut text |
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Paste the first argument of the previous command |
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Paste the last argument of the previous command |
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Move to the previous line |
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Move to the next line |
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Search |
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Reverse search |
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End search |
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Abort search (restores original line) |
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Restore all changes made to line |
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Auto-complete a name |
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List all possible completions |
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Insert all possible completions |
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(F2, F3, …) Switch to n-th virtual console. If it doesn't work, try Ctrl + Fn + Alt + F |
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Paste text from the PRIMARY buffer |
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Note: By default, Qt maps Shift+Insert to CLIPBOARD instead of the PRIMARY buffer and Ctrl+Shift+Insert is mapped to the PRIMARY buffer.
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Source: ArchWiki
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What is your favorite Arch Linux hotkey? Do you have any useful tips for it? Let other users know below.
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