.\" Copyright, the authors of the Linux man-pages project .\" .\" SPDX-License-Identifier: GPL-3.0-or-later .\" .TH proc_sysrq\-trigger 5 2025-05-17 "Linux man-pages 6.16" .SH NAME /proc/sysrq\-trigger \- SysRq function .SH DESCRIPTION .TP .IR /proc/sysrq\-trigger " (since Linux 2.4.21)" Writing a character to this file triggers the same SysRq function as typing ALT-SysRq- (see the description of .IR /proc/sys/kernel/sysrq ). This file is normally writable only by .IR root . For further details see the Linux kernel source file .I Documentation/admin\-guide/sysrq.rst .\" commit 9d85025b0418163fae079c9ba8f8445212de8568 (or .I Documentation/sysrq.txt before Linux 4.10). .SH SEE ALSO .BR proc (5)