Running Xubuntu 16.04.1 LTS 64-bit.
/proc/sys/kernel/yama/ptrace_scope keeps resetting to 1 if I reboot, despite me changing it to 0 manually. How can I keep ptrace_scope set to a value of 0?
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/proc values are stored in RAM so it isn't persistent. But it read its initial values from a file. You can permanently change the value of /proc/sys/kernel/yama/ptrace_scope to 0 by editing the file
/etc/sysctl.d/10-ptrace.conf and change the line:
kernel.yama.ptrace_scope = 1
kernel.yama.ptrace_scope = 0