Linux tips

Linux真的是個不常用就很容易忘掉要怎麼用的東西..

• Unload module

rmmod nouveau

• Change file attribute

sudo chmod 777 filename

• Open terminal window

'Ctrl' + 'Alt' + 'T'

• Mount USB disk

sudo su

fdisk -l

mkdir /mnt/tmp

sudo mount /dev/sdb1 /mnt/tmp

cp *.* /mnt/tmp

• Check Linux kernel

uname -a

• Login status:

last

• Open file explorer in Ubuntu

sudo nautilus

• Access memory

devmem 0xadr [width [value]]

• Get root privilege

su -

• Call ACPI method under Ubuntu live CD

• boot into Ubuntu live CD
• copy "fwdt-dkms_0.1_all.deb" to read-writeable folder
• get internal access, download dkms package:

sudo apt-get install dkms

• install fwdt:

sudo dpkg -i fwdt_dkms_0.1_all.deb

• execute ACPI method:

sudo sh -c "echo _SB.PCI0... > acpi_function _0_1"

• get return value if have:

cat acpi_function_0_1

Below tested under RedHat

• Stop X server

sudo init 3

• Resume X server

sudo init 5

• Install NVIDIA driver

sh NVIDIA-Linux-xxx.run

nvidia-installer <options>

<--uninstall>

<--latest>

<--update>

• Download file from console

wget -O /home/omio/Desktop/ "file url"

• Update kernel

rpm -ivh kernel-xxxx.rpm --nodeps --force

<or>

yum -y update kernel

• Install SSH on CentOS 6.5

yum -y install openssh*

<then start>

service sshd start