電気回路/z-turn/Linuxの設定 の履歴(No.2)

インストール直後のバージョン†

DVD のディスクイメージに含まれる Ubuntu のバージョン

LANG:console
$ uname --all
 Linux localhost.localdomain 3.15.0-xilinx #9 SMP PREEMPT Tue May 26 17:26:14 CST 2015 armv7l armv7l armv7l GNU/Linux
$ gcc --version
 gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
 Copyright (C) 2011 Free Software Foundation, Inc.
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ cat /etc/apt/sources.list
 deb http://ports.ubuntu.com/ubuntu-ports/ precise main restricted
 deb-src http://ports.ubuntu.com/ubuntu-ports/ precise main restricted
 #
 deb http://ports.ubuntu.com/ubuntu-ports/ precise-updates main restricted
 deb-src http://ports.ubuntu.com/ubuntu-ports/ precise-updates main restricted
 #
 deb http://ports.ubuntu.com/ubuntu-ports/ precise-security main restricted
 deb-src http://ports.ubuntu.com/ubuntu-ports/ precise-security main restricted

ふむ。

Ubuntu のバージョンは

• precise (12.04LTS, Linux kernel 3.2)

https://ja.wikipedia.org/wiki/Ubuntu によればまだギリギリサポートは続いているけれど、 それも今年 2017 年の４月までなので、早めに

• trusty (14.04 LTS, Linux Kernel 3.13) あるいは
• xenial (16.04 LTS, Linux Kernel 4.3) に上げたい

ちなみに Debian は

• wheezy が Linux 3.2
• jessie が Linux 3.16
• stretch が Linux >= 4.8

アップグレード†

LANG:console
$ su
$ apt-get update
$ apt-get upgrade
 ...
 679 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
 Need to get 306 MB of archives.
 After this operation, 96.2 MB of additional disk space will be used.
 ...
 update-initramfs: deferring update (trigger activated)
 Processing triggers for initramfs-tools ...
 update-initramfs: Generating /boot/initrd.img-3.2.0-1412-omap4
 grep: /boot/config-3.2.0-1412-omap4: No such file or directory
 WARNING: missing /lib/modules/3.2.0-1412-omap4
 Device driver support needs thus be built-in linux image!
 WARNING: Couldn't open directory /lib/modules/3.2.0-1412-omap4: No such file or directory
 FATAL: Could not open /lib/modules/3.2.0-1412-omap4/modules.dep.temp for writing: No such file or directory
 FATAL: Could not load /lib/modules/3.2.0-1412-omap4/modules.dep: No such file or directory
 cryptsetup: WARNING: could not determine root device from /etc/fstab
$ apt-get dist-upgrade
 22 upgraded, 9 newly installed, 0 to remove and 0 not upgraded.
 Need to get 44.9 MB of archives.
 After this operation, 135 MB of additional disk space will be used.

そのままやると時間が掛かりすぎるので、いらないパッケージを抜いてからの方がよかった。。。

LANG:console
$ apt-get purge libx11-6 xserver-xorg-core linux-sound-base
$ apt-get autoremove

これでいいかな？

ユーザー作成 & sshd 起動†

操作をミスってシステムを壊してしまったりしないように、 普段は一般ユーザーのアカウントで作業したい。

LANG:console
$ adduser osamu
$ gpasswd -a osamu sudo
$ apt-get install openssh-server

いくつか必須アプリを入れる†

LANG:console
$ apt-get install jed-common etckeeper

Example を試してみる†

LANG:console
$ make

LANG:console
$ ./led-test
 [usr_led1] Get trigger: 'none'
 Open /sys/class/leds/usr_led1/trigger failed!
$ sudo ./led-test
 sudo: unable to resolve host localhost.localdomain
 [usr_led1] Get trigger: 'none'
 [usr_led1] Set trigger to 'none'
 [usr_led2] Get trigger: 'none'
 [usr_led2] Set trigger to 'none'
 [   led_r] Get trigger: 'none'
 [   led_r] Set trigger to 'none'
 [   led_g] Get trigger: 'none'
 [   led_g] Set trigger to 'none'
 [   led_b] Get trigger: 'none'
 [   led_b] Set trigger to 'none'
^C[usr_led1] Set trigger to 'none'
 [usr_led2] Set trigger to 'none'
 [   led_r] Set trigger to 'none'
 [   led_g] Set trigger to 'none'
 [   led_b] Set trigger to 'none'
$  sudo chown root:root led-test
 sudo: unable to resolve host localhost.localdomain
$ sudo chmod u+s led-test
$ sudo chmod o+x led-test
$ ./led-test
 [usr_led1] Get trigger: 'none'
 [usr_led1] Set trigger to 'none'
 [usr_led2] Get trigger: 'none'
 [usr_led2] Set trigger to 'none'
 [   led_r] Get trigger: 'none'
 [   led_r] Set trigger to 'none'
 [   led_g] Get trigger: 'none'
 [   led_g] Set trigger to 'none'
 [   led_b] Get trigger: 'none'
 [   led_b] Set trigger to 'none'
 ^C[usr_led1] Set trigger to 'none'
 [usr_led2] Set trigger to 'none'
 [   led_r] Set trigger to 'none'
 [   led_g] Set trigger to 'none'
 [   led_b] Set trigger to 'none'

trusty へ dist-update†

ディスクイメージのバックアップを取ったのち、 /etc/apt/sources.list の precise をすべて trusty に直して

LANG:console
$ apt-get update
$ apt-get upgrade
$ apt-get dist-update
$ apt-get autoremove

LANG:console
$ apt-get install language-pack-ja-base