View common commands for Linux systems, Linux View system configuration common commands

One, the Linux CPU size
Cat/proc/cpuinfo |grep "model name" && cat/proc/cpuinfo |grep "Physical ID"

Description: Detailed information about each CPU can be seen in/proc/cpuinfo under Linux. But for a dual-core CPU, you will see two CPUs in the Cpuinfo. It is often mistaken for a two single-core CPU.
You should actually differentiate between single-core and dual-core by physical Processor ID. The physical Processor ID can be found from Cpuinfo or DMESG. Flags if you have HT description support Hyper-Threading technology determine the number of physical CPUs you can view the value of the physical ID, the same as
Second, memory size

Cat/proc/meminfo |grep Memtotal

Three, hard disk size
Fdisk-l |grep Disk

Four
UNAME-A # Linux System Information command to view kernel/Os/cpu information

Five, head-n 1/etc/issue # View OS version, is the number 1 not the letter L

Vi. Cat/proc/cpuinfo # Linux System Information commands for viewing CPU information

Vii. hostname # View Linux System Information commands for computer names

Viii. Lspci-tv # List of all PCI devices

Ix. LSUSB-TV # Lists Linux System Information commands for all USB devices

X. LSMOD # List of loaded kernel modules

Module Size used BYAUTOFS4 26513 3SUNRPC 260521 18021q 253170 Garp 7152 18021QSTP 2218 1GARPLLC 5546 2Garp,stpcpufreq_ondemand 10544 2POWERNOW_K8 18171 1Freq_table 4936 2Cpufreq_ondemand,powernow_k8mperf 1557 1Powernow_k8ip6t_reject 4628 2Nf_conntrack_ipv6 8748 2Nf_defrag_ipv6 11182 1Nf_conntrack_ipv6xt_state 1492 2Nf_conntrack 79357 2Nf_conntrack_ipv6,xt_stateip6table_filter 2889 1Ip6_tables 19458 1Ip6table_filteripv6 321422 47Ip6t_reject,nf_conntrack_ipv6,nf_defrag_ipv6ppdev 85370 parport_pc 226900 Parport 36209 2ppdev,parport_pcasus_atk0110 142160 SG 293500 microcode 1126530 Serio_raw 45940 K10temp 36090 Edac_core 465810 EDAC_MCE_AMD 147050 Snd_hda_codec_realtek 68136 1Snd_hda_intel 27823 2Snd_hda_codec 121518 2SND_HDA_CODEC_REALTEK,SND_HDA_INTELSND_HWDEP 6652 1Snd_hda_codecsnd_seq 55759 1Snd_seq_device 6500 1SND_SEQSND_PCM 86635 2Snd_hda_intel,snd_hda_codecsnd_timer 22411 3SND_SEQ,SND_PCMSND 69907 14Snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_seq,snd_seq_device,snd_pcm,snd_timersoundcore 7958 1Sndsnd_page_alloc 8470 2Snd_hda_intel,snd_pcmi2c_piix4 126080 r8169 600230 Mii 5376 1R8169SHPCHP 327780 EXT4 363408 3Mbcache 8193 1EXT4JBD2 90230 1Ext4sr_mod 151770 CDROM 39085 1Sr_modsd_mod 38976 3crc_t10dif 1541 1 sd_modahci 41127 2 pata_acpi 3701 0 ata_generic 3837 0 pata_atiixp 4211 0 radeo N 917108 0 Ttm 80957 1 radeondrm_kms_helper 40087 1 radeondrm 265638 3 radeon,ttm,drm_kms_helperi2c_algo_b It 5935 1 radeoni2c_core 31084 5 i2c_piix4,radeon,drm_kms_helper,drm,i2c_algo_bitdm_mirror 14133 0 dm_ Region_hash 12085 1 dm_mirrordm_log 9930 2 dm_mirror,dm_region_hashdm_mod 82839 one dm_mirror,dm_log 

Xi. env # View environment variable resources

less_termcap_mb=Hostname=Localhost.localdomainless_termcap_md=Less_termcap_me=term=xtermshell=/bin/bashhistsize=1000nls_lang=American_america. al32utf8ssh_client=192.168.1.104 2465 22qtdir=/usr/lib64/qt-3.3oldpwd=/Homeless_termcap_ue=qtinc=/usr/lib64/qt-3.3/Includessh_tty=/dev/pts/1User=rootld_library_path=/usr/lib/oracle/11.2/client64/LIB:LS_COLORS=RS=0:DI=01;34:LN=01;36:MH=00:PI=40;33:SO=01;35:DO=01;35:BD=40;33;01:CD=40;33;01:Or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01 ; 31:*.arj=01;31:*.taz=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.zip=01;31:*.z=01;31:*. Z=01;31:*.dz=01;31:*.gz=01;31:*.lz=01;31:*.xz=01;31:*.bz2=01;31:*.tbz=01;31:*.tbz2=01;31:*.bz=01;31:*.tz=01;31 :*. deb=01;31:*.rpm=01;31:*.jar=01;31:*.rar=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*. jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*. xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*. mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*. qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv =01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01; 35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg= 01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36: oracle_base=/usr/lib/oracle/11.2less_termcap_us=mail=/var/spool/mail/rootpath=/usr/lib64/ Qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/erlang/bin:/home/rabbitmq_ server-3.3.1/sbin/:/usr/lib/oracle/11.2/client64/bin:/root/binpwd=/lang=zh_cn. UTF-8kde_is_prelinked=1modulepath=/usr/share/modules/modulefiles:/etc/modulefilesloadedmodules= kdedirs=/usrssh_askpass=/usr/libexec/openssh/gnome-ssh-askpasshistcontrol=ignoredupsshlvl=1 

12. Free-m # View memory usage and swap area usage

                    Total used       free     shared    buffers     cachedmem:          3706       3534        171          0       3258-/+ Buffers/cache:        244       3461Swap:         3711          0       3711[[email protected]/]  

13, Df-h # View the usage of each partition

[[email protected]/] # Df-h file system          capacity  has been used with  available percent mount point/dev/mapper/volgroup-lv_root                       50G  6.4G   41G  14%/tmpfs                 1.9G   72K  1.9G   1%/dev/shm/dev/sda1 485M 38M 422M 9%/boot/dev/ mapper/volgroup-lv_home 406G 2.8G 382G 1%        /Home

The following is not a demonstration

14, Du-sh # View the size of the specified directory
15. grep Memtotal/proc/meminfo # View Total Memory
16. grep Memfree/proc/meminfo # View the amount of free memory
17. Uptime # View System uptime, number of users, load
18. Cat/proc/loadavg # View system load disks and partitions
19, Mount | column-t # View the status of the attached partition
20. Fdisk-l # View all partitions
21. Swapon-s # View all swap partitions
22. Hdparm-i/dev/hda # View disk parameters (for IDE devices only)
23, DMESG | grep IDE # VIEW IDE device detection network at startup
24. Ifconfig # View the properties of all network interfaces
25. Iptables-l # View firewall settings
26. Route-n # View the routing table
27. NETSTAT-LNTP # View all listening ports
28. NETSTAT-ANTP # View all established connections
29. Netstat-s # Viewing the network statistics process
30. Ps-ef # View All Processes
31, Top # Real-time display process status users
32. W # View Active Users
33. ID # View specified user information
34. Last # View user log in log
35, cut-d:-F1/ETC/PASSWD # View All users of the system
36, cut-d:-f1/etc/group # View all system groups
37. Crontab-l # View the current user's scheduled tasks service
37. Chkconfig–list # List all system services
38, Chkconfig–list | grep on # Lists all started system services programs
39. Rpm-qa # View all installed Packages
40. Cat/proc/cpuinfo: Linux system commands to view CPU-related parameters
41, Cat/proc/partitions: View the Linux hard disk and partition information System Information command
42. Cat/proc/meminfo: Linux system command to view Linux system memory information
43, Cat/proc/version: View version, similar to Uname-r
44. Cat/proc/ioports: View device IO port
45. Cat/proc/interrupts: View interrupts
46. CAT/PROC/PCI: View PCI Device information
47. Cat/proc/swaps: View information for all swap partitions

View common commands for Linux systems, Linux View system configuration common commands