Computer/Linux の変更点

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#author("2019-12-24T15:56:29+00:00","hhh","hhh")
&size(24){&color(olive){''Linux''};};
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- 更新1年以内のファイルを探す。 
 find mora -mtime -365 -type f -print0


- Linux Kernel Newbies
-- http://kernelnewbies.org/

- The Linux Documentation Project
-- http://www.tldp.org/

- カーネルモジュール作成メモ
-- http://www.hakodate-ct.ac.jp/~tokai/tokai/research/kmod.html

*** Compaq 6715s WLAN [#i7f9fad4]

- dmesg
 [  280.985084] b43-phy0: Broadcom 4311 WLAN found (core revision 13)
 [  281.016439] b43-phy0: Found PHY: Analog 4, Type 2 (G), Revision 9
 [  281.016493] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2050, Revision 2, Version 0
 [  281.028858] Broadcom 43xx driver loaded [ Features: PNL ]
 [  281.058968] b43 ssb0:0: Direct firmware load for b43/ucode13.fw failed with error -2
 [  281.059110] b43 ssb0:0: Direct firmware load for b43/ucode13.fw failed with error -2
 [  281.059266] b43 ssb0:0: Direct firmware load for b43-open/ucode13.fw failed with error -2
 [  281.059342] b43 ssb0:0: Direct firmware load for b43-open/ucode13.fw failed with error -2
 [  281.059371] b43-phy0 ERROR: Firmware file "b43/ucode13.fw" not found
 [  281.059379] b43-phy0 ERROR: Firmware file "b43-open/ucode13.fw" not found
 [  281.059403] b43-phy0 ERROR: You must go to http://wireless.kernel.org/en/users/Drivers/b43#devicefirmware and download the correct firmware for this driver version. Please carefully read all instructions on this website.


*** systemd [#gecee7bc]

- http://kenjiszk.hatenablog.com/entry/2015/05/05/235051
- systemdは/etc/inittabを使わないのでsvscanbootが自動起動しない
- systemd流儀で起動させる
- /etc/systemd/system/daemontools.service 
 [Unit]
 Description=daemontools Start supervise
 After=getty.target
 
 [Service]
 Type=simple
 User=root
 Group=root
 Restart=always
 ExecStart=/command/svscanboot /dev/ttyS0
 TimeoutSec=0
 
 [Install]
 WantedBy=multi-user.target
- enable & start
 systemctl enable daemontools
 systemctl start daemontools
 
*** cpufreqd [#g255b3c4]
 
- install
 apt-get install cpufreqd cpufrequtils

- governor
 cpufreq-set -g ondemand



*** ext3の高速化 [#n7e35a9e]

- /etc/fstab
 /dev/hda1 / ext3 errors=remount-ro,noatime,data=writeback 0 1

- /boot/grub/grub.cfg
 linux   /boot/vmlinuz-2.6.x root=UUID=1234-5-hoge ro rootflags=data=writeback

- tune2fs
 tune2fs -o journal_data_writeback /dev/hda1

*** dpkg [#i05763fb]

- --set-selections
 echo linux-image-3.16.0-70-lowlatency hold | dpkg --set-selections

- --get-selections
 dpkg --get-selections | grep xxx


*** iptables [#s737d0fe]

- iptables -L