Linux下和硬件相关的命令
Category: /knowledge /linuxTags: linux
Hard disk
查看硬盘信息
-
SATA
smartctl -i /dev/sda sudo hdparm -I /dev/sda -tT: test read speed 测试硬盘读取速度时有用
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IDE
find /proc/ide/ide[0-9]/hd? -type f -name model -exec cat {} \;
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SCSI硬盘
cat /proc/scsi/scsi
总写入量 – Total Bytes Written (TBW)
http://serverfault.com/questions/238033/measuring-total-bytes-written-under-linux
关于 /proc/diskstats
Field 1 -- # of reads issued
Field 2 -- # of reads merged, field 6 -- # of writes merged
Field 3 -- # of sectors read
Field 4 -- # of milliseconds spent reading
Field 5 -- # of writes completed
Field 7 -- # of sectors written
Field 8 -- # of milliseconds spent writing
Field 9 -- # of I/Os currently in progress
Field 10 -- # of milliseconds spent doing I/Os
Field 11 -- weighted # of milliseconds spent doing I/Os
sysstat
sudo aptitude install sysstat
sudo iostat
下面是我的传统硬盘的参数(以ＭＢ为单位):
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 4.81 56.35 45.71 67161429 54478969
如果你的文件系统是ext4, 还可以试
/sys/fs/ext4/sd(a|b|c)/lifetime_write_kbytes
格式化硬盘
sudo mkfs.ext4 -b 1024 -E stride=128,stripe-width=128 /dev/sdb1
-O ^has_journal: 关闭journaling feature
Keyboard
Key mappings
- run
xevto catch keycodes -
open ~/.xmodmap
keycode 94 = Alt_L
-
to get a list of current mappings
xmodmap -pke
If you want to switch Esc and Caps Lock,
remove Lock = Caps_Lock
remove Control = Escape
keysym Escape = Caps_Lock
keysym Caps_Lock = Escape
add Control = Escape
add Lock = Caps_Lock
If you want rotate Esc, Caps_Lock and Control_L, do
remove Lock = Caps_Lock
remove Control = Control_L
remove Control = Escape
keysym Escape = Caps_Lock
keysym Caps_Lock = Control_L
keysym Control_L = Escape
add Control = Escape
add Control = Control_L
add Lock = Caps_Lock
Monitor
setup undetected resolution ———————————
cvt 1680 1050
# 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
Modeline "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync
xrandr --newmode "1680x1050_60.00" 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -HSync +VSync
xrandr --addmode VGA1 1680x1050_60.00
xrandr --output VGA1 --mode "1680x1050_60.00"
Setup SD card within laptop
first, find the card,
lspci
08:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller
then, test it out
sudo modprobe tifm_sd
try to insert a SD card into the slot. If you can see the light flashes and the file manager pops up the drive, it works, then add the info to system config.
sudo vi /etc/modules
add the following line to the file
tifm_sd
