1. DaisukeMiyamoto

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    DaisukeMiyamoto
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+Linux上でマシンスペックを確認する方法
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+Linux環境でコマンドラインからマシンのハードウェア構成を表示する方法と,その結果例.
+できるだけ追加パッケージのインストールなしで.
+Ubuntu 16.04, Ubuntu 17.04,CentOS6,CentOS7等で確認.
+
+# CPU
+```shell-session
+$ cat /proc/cpuinfo
+processor : 0
+vendor_id : GenuineIntel
+cpu family : 6
+model : 94
+model name : Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz
+stepping : 3
+microcode : 0x74
+cpu MHz : 1156.875
+cache size : 8192 KB
+physical id : 0
+siblings : 8
+core id : 0
+cpu cores : 4
+apicid : 0
+initial apicid : 0
+fpu : yes
+fpu_exception : yes
+cpuid level : 22
+wp : yes
+flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp
+bugs :
+bogomips : 8015.88
+clflush size : 64
+cache_alignment : 64
+address sizes : 39 bits physical, 48 bits virtual
+power management:
+~~
+```
+
+# Memory
+```shell-session
+$ cat /proc/meminfo
+MemTotal: 65917944 kB
+MemFree: 51289844 kB
+MemAvailable: 57042336 kB
+Buffers: 659852 kB
+Cached: 5827560 kB
+SwapCached: 0 kB
+Active: 9988476 kB
+Inactive: 3241888 kB
+Active(anon): 6809604 kB
+Inactive(anon): 962860 kB
+Active(file): 3178872 kB
+Inactive(file): 2279028 kB
+~~
+```
+
+ベンダー名等より詳細な情報が必要な場合は,[dmidecode](http://www.nongnu.org/dmidecode/)コマンドが便利.
+
+```shell-session
+$ sudo dmidecode -t memory
+Getting SMBIOS data from sysfs.
+SMBIOS 2.8 present.
+
+Handle 0x0014, DMI type 17, 40 bytes
+Memory Device
+ Array Handle: 0x0013
+ Error Information Handle: Not Provided
+ Total Width: 64 bits
+ Data Width: 64 bits
+ Size: 16384 MB
+ Form Factor: DIMM
+ Set: None
+ Locator: ChannelA-DIMM0
+ Bank Locator: BANK 0
+ Type: DDR4
+ Type Detail: Synchronous
+ Speed: 3000 MHz
+ Manufacturer: 0215
+ Serial Number: 00000000
+ Asset Tag: 9876543210
+ Part Number: CMK32GX4M2B3000C15
+ Rank: 2
+ Configured Clock Speed: 3000 MHz
+ Minimum Voltage: Unknown
+ Maximum Voltage: Unknown
+ Configured Voltage: 1.35 V
+~~
+```
+
+# マザーボード M/B
+```shell-session
+$ sudo dmidecode -t baseboard
+Getting SMBIOS data from sysfs.
+SMBIOS 2.8 present.
+
+Handle 0x0002, DMI type 2, 15 bytes
+Base Board Information
+ Manufacturer: ASRock
+ Product Name: Z170 Extreme4
+ Version:
+ Serial Number: 000000000
+ Asset Tag:
+ Features:
+ Board is a hosting board
+ Board is replaceable
+ Location In Chassis:
+ Chassis Handle: 0x0003
+ Type: Motherboard
+ Contained Object Handles: 0
+```
+
+# グラフィックカード
+```shell-session
+$ lspci | grep VGA
+01:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 960] (rev a1)
+```
+
+## NVIDIA
+NVIDIAのドライバがインストール済みの場合は,以下の方法でより詳細な情報が取得できる
+
+```shell-session
+$ nvidia-smi
++-----------------------------------------------------------------------------+
+| NVIDIA-SMI 375.39 Driver Version: 375.39 |
+|-------------------------------+----------------------+----------------------+
+| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
+| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
+|===============================+======================+======================|
+| 0 GeForce GTX 960 Off | 0000:01:00.0 On | N/A |
+| 10% 46C P8 10W / 130W | 298MiB / 1995MiB | 0% Default |
++-------------------------------+----------------------+----------------------+
+
++-----------------------------------------------------------------------------+
+| Processes: GPU Memory |
+| GPU PID Type Process name Usage |
+|=============================================================================|
+| 0 1223 G /usr/lib/xorg/Xorg 251MiB |
+| 0 2373 G cinnamon 45MiB |
++-----------------------------------------------------------------------------+
+```
+
+# HDD/ストレージ
+## マウントポイントや容量のみ
+
+```shell-session
+$ df
+Filesystem 1K-blocks Used Available Use% Mounted on
+/dev/nvme0n1p2 1902364780 87206412 1718500756 5% /
+/dev/nvme0n1p1 523248 3540 519708 1% /boot/efi
+```
+
+## モデル名等含めてディスク単位で知りたい場合
+
+```shell-session
+$ sudo parted -l
+Model: ATA WDC WD6001FZWX-0 (scsi)
+Disk /dev/sda: 6001GB
+Sector size (logical/physical): 512B/4096B
+Partition Table: loop
+Disk Flags:
+
+Number Start End Size File system Flags
+ 1 0.00B 6001GB 6001GB ext4
+
+
+Model: ATA WDC WD60EFRX-68L (scsi)
+Disk /dev/sdb: 6001GB
+Sector size (logical/physical): 512B/4096B
+Partition Table: loop
+Disk Flags:
+
+Number Start End Size File system Flags
+ 1 0.00B 6001GB 6001GB ext4
+```
+
+## パーティションの階層構造を調べたい場合
+```shell-session
+$ lsblk
+NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
+sda 8:0 0 5.5T 0 disk /data
+sdb 8:16 0 5.5T 0 disk /backup
+nvme0n1 259:0 0 1.9T 0 disk
+├─nvme0n1p1 259:1 0 512M 0 part /boot/efi
+├─nvme0n1p2 259:2 0 1.8T 0 part /
+└─nvme0n1p3 259:3 0 64G 0 part [SWAP]
+```
+
+## `/etc/fstab`用にUUIDを知りたい場合
+
+```shell-session
+$ ls -la /dev/disk/by-uuid
+total 0
+drwxr-xr-x 2 root root 140 May 2 19:51 .
+drwxr-xr-x 8 root root 160 May 2 19:51 ..
+lrwxrwxrwx 1 root root 15 May 10 19:46 ????????-8648-4905-bdbb-???????????? -> ../../nvme0n1p2
+lrwxrwxrwx 1 root root 9 May 10 19:46 ????????-5d7e-4a49-b36c-???????????? -> ../../sdb
+lrwxrwxrwx 1 root root 15 May 10 19:46 ????????-43ed-4cbb-9706-???????????? -> ../../nvme0n1p3
+lrwxrwxrwx 1 root root 9 May 10 19:46 ????????-cf1b-4033-98cc-???????????? -> ../../sda
+```
+
+# ネットワークカード
+```shell-session
+$ lspci | grep Ethernet
+00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
+01:00.0 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
+01:00.1 Ethernet controller: Intel Corporation Ethernet Controller 10-Gigabit X540-AT2 (rev 01)
+```
+
+# OS
+
+## カーネルバージョン
+
+```shell-session
+$ uname -a
+Linux hostname 4.4.0-75-generic #96-Ubuntu SMP Thu Apr 20 09:56:33 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
+```
+
+## ディストリビューションのバージョン
+Ubuntu 16.04の16.04や,Linux Mint 18.1の18.1等.
+
+```shell-session
+$ lsb_release -r
+Release: 18.1
+```
+
+## RedHat/CentOS
+
+```shell-session
+$ cat /etc/redhat-release
+CentOS release 6.9 (Final)
+```
+
+## Debian/Ubuntu
+
+```shell-session
+$ cat /etc/lsb-release
+DISTRIB_ID=Ubuntu
+DISTRIB_RELEASE=16.04
+DISTRIB_CODENAME=xenial
+DISTRIB_DESCRIPTION="Ubuntu 16.04.2 LTS"
+```
+
+
+
+# 参考
+- [Man page of PROC | https://linuxjm.osdn.jp](https://linuxjm.osdn.jp/html/LDP_man-pages/man5/proc.5.html)
+- [dmidecode | http://www.nongnu.org](http://www.nongnu.org/dmidecode/)
+- [HWの情報を取得できるdmidecodeコマンドが結構便利だと思った - 完熟トマト](http://kanjuku-tomato.blogspot.jp/2013/08/hwdmidecode.html)
+- [Linuxで載ってるメモリ(DDR)の種類を調べるコマンド - Qiita](http://qiita.com/aokomoriuta/items/74a807300f644d623a02)
+- [lspci(8) — manpages-ja — Debian unstable — Debian Manpages](https://manpages.debian.org/unstable/manpages-ja/lspci.8.ja.html)
+- [lsb_release | http://refspecs.linuxbase.org](http://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/lsbrelease.html)