구차니의 잡동사니 모음

Because your old disc was partitioned with a old utility, such as the Linux fdisk, that uselessly implemented track-alignment using the entirely fake disc geometry that you see reported, and your new disc has been or is being partitioned by a newer utility that (by default) aligns to 1MiB boundaries instead. 

In other words, the LBA sector number 63 corresponds to cylinder 0, head 1, sector 1 in the CHS format, which is the first sector you can use in the MBR format. However, the number 63 is not divisible by 8, which causes a problem with 4K drives, so some modern tools starts the first partition at 2048 which also provides future GPT compatibility. – billc.cn Oct 31 '11 at 23:48 

$ hostname -i

127.0.0.1

$ hostname -I

192.168.10.11 

-i, --ip-address

Display the IP address(es) of the host. Note that this works only if the host name can be resolved. Avoid using this option; use hostname --all-ip-addresses instead. 

-I, --all-ip-addresses

Display all network addresses of the host. This option enumerates all configured addresses on all network interfaces. The loopback interface and IPv6 link-local addresses are omitted. Contrary to option -i, this option does not depend on name resolution. Do not make any assumptions about the order of the output.

$ sudo vi /etc/X11/xorg.conf

Section "ServerFlags"

    Option "DontVTSwitch" "true"

EndSection 

$ sudo sysctl disable serial-getty@ttySAC1.service

sysctl: cannot stat /proc/sys/disable: No such file or directory

sysctl: cannot stat /proc/sys/serial-getty@ttySAC1/service: No such file or directory

$ ll /proc/sys

total 0

dr-xr-xr-x   1 root root 0 ene  1  2000 ./

dr-xr-xr-x 150 root root 0 ene  1  1970 ../

dr-xr-xr-x   1 root root 0 oct 12 00:57 debug/

dr-xr-xr-x   1 root root 0 oct 12 00:57 dev/

dr-xr-xr-x   1 root root 0 ene  1  2000 fs/

dr-xr-xr-x   1 root root 0 ene  1  2000 kernel/

dr-xr-xr-x   1 root root 0 ene  1  2000 net/

dr-xr-xr-x   1 root root 0 ene  1  2000 vm/ 

$ sudo vi /etc/sysctl.conf

kernel.printk = 0 4 1 7 

# sysctl -w kernel.printk="2 4 1 7"

kernel.printk = 2 4 1 7

# sysctl kernel.printk

kernel.printk = 2       4       1       7

$ sysctl kernel.printk

kernel.printk = 1       4       1       7 

$ lscpu

Architecture:          armv7l

Byte Order:            Little Endian

CPU(s):                4

On-line CPU(s) list:   0-3

Thread(s) per core:    1

Core(s) per socket:    4

Socket(s):             1 

sudo apt-get install apache2

sudo apt-get install php4

sudo apt-get install libapache2-mod-php4

sudo /etc/init.d/apache2 restart 

These lines are irrelevant to kernel upgrades. And also that is not good to comment them. You will not be able to install some packages if you do it.

You can freeze any package including kernel packages by

sudo apt-mark hold <package_name>

for example

sudo apt-mark hold linux-image-generic linux-headers-generic

But you need to check which kernel meta-package is installed for LTS versions. It may be linux-generic-lts-utopic, etc. 

Hold a package:

sudo apt-mark hold package_name

Remove the hold:

sudo apt-mark unhold package_name 

$ apt-cache search linux-image-generic

linux-image-generic - Generic Linux kernel image

linux-image-generic-lts-raring - Generic Linux kernel image

linux-image-generic-lts-saucy - Generic Linux kernel image

linux-image-generic-lts-trusty - Generic Linux kernel image

linux-image-generic-lpae - Generic Linux kernel image

linux-image-generic-lpae-lts-saucy - Generic Linux kernel image

linux-image-generic-lpae-lts-trusty - Generic Linux kernel image

linux-image-highbank - Linux kernel image for the armhf architecture.

linux-image-omap - Linux kernel image for the armhf architecture.

linux-image-generic-lts-utopic - Generic Linux kernel image

linux-image-generic-lts-vivid - Generic Linux kernel image

linux-image-generic-lts-wily - Generic Linux kernel image

linux-image-generic-lts-xenial - Generic Linux kernel image

linux-image-generic-lpae-lts-utopic - Generic Linux kernel image

linux-image-generic-lpae-lts-vivid - Generic Linux kernel image

linux-image-generic-lpae-lts-wily - Generic Linux kernel image

linux-image-generic-lpae-lts-xenial - Generic Linux kernel image