GPU install

apt-get update

apt-get dist-upgrade

apt-get install -y linux-headers-$(uname -r)

apt-get install nvidia-kernel-dkms

sed's/quint/quiet nouveau.modeset=0/g' -i/etc/default/grub update-grub

reboot

verify:

glxinfo |grep -i "direct rendering"

***********

ulimit -s (stack)

vi .bashrc (modify all time)

*********laptop mode********

xxx.sh

#!/bin/bash

currentMode=$(cat /proc/sys/vm/laptop_mode)

if[$currecntMode -eq 0]

then

echo  "5">/proc/sys/vm/laptop_mode

echo "Laptop Mode Enabled"

else

echo "0">/proc/sys/vm/laptop_mode

echo "Laptop Mode Disabled"

fi

*************** 

run level:0->shutdown 6->reboot 1->single user mode 2345->multi-usr mode

update-rc.d ssh(network service name) default

/etc/init.d/ssh(service name) start