Uncommon but useful query commands

Common but useful query commands-general Linux technology-Linux technology and application information. For more information, see the following. 1. Command for viewing system version information

Several Methods to view linux version information:
1. uname-
2. cat/proc/version
3. cat/etc/issue
4. lsb_release-

Details about lsb_release-

Log on to the server and execute lsb_release-a to list all version information, for example:
1. [root@3.5.5Biz-46 ~] # Lsb_release-
2. lsbversion: 1.3
3. Distributor ID: RedHatEnterpriseAS
4. Description: Red Hat Enterprise Linux AS release 4 (Nahant Update 1)
5. Release: 4
6. Codename: NahantUpdate1
7. [root@3.5.5Biz-46 ~] #
This command applies to all linux releases, including Redhat, SuSE, and Debian.


Ii. Command for viewing hardware information (Linux & Solaris)

Command for viewing hardware information in linux

View CPU:
Cat/proc/cpuinfo

View memory:
Cat/proc/meminfo
Free

View Hard Disk:
Df-h-T (no device cannot be seen)
Fdisk-l can be viewed in redhat9.0; redhat Enterprise Edition does not work.

View IRQ usage
Cat/proc/interrupts

There are several commands in linux to view the information of many hardware devices.
Lspci-v
Dmidecode
Dmesg

Solaris:
Nic speed: dmesg | grep link
CPU frequency: psrinfo-v or mpstat
Cpu/memory, etc.: prtdiag-v (most of the information is listed) needs to first enter/usr/platform/sun4u/sbin
Hard Disk: iostat-E

Iii. Speed and traffic

View traffic:
Iptraf