Network command in unik/linux, windows or mac OS

The following commands will report the TCP/IP configuration on Unix, MacOS X, Windows, and Cisco operating systems. By "Unix" I mean anything vaguely Unix-like — Solaris, Linux, BSD, Tru64, AIX, IRIX, HP-UX, etc., plus MacOS X.

Note that the Cisco IOS allows for command abbreviation. That is, instead of:
router> show interfaces
you could simply type:
router> sh in
However, I prefer to use the entire command, using the tab key for command completion. You type just sh and then press :
router> sh
and the system finishes the command itself:
router> show
At that point you could press ? to see what alternatives are available (in the case of the show command, quite a few!), and then type enough of the parameter to be unambiguous:
router> show in
and it finishes the parameter for you:
router> show interfaces
Only two more key presses and you get a clear explanation of what it's doing. More importantly, your typing errors become much more obvious!

Read more...

WINDOWS IP CONFIG

Configure IP (internet protocol configuration)

Syntax

IPCONFIG /all = Display full configuration information.
IPCONFIG /release [adapter] = Rlease the IP address for the specified adapter.
IPCONFIG /renew [adapter] = Renew the IP address for the specified adapter.
IPCONFIG /flushdns = Purge the DNS Resolver cache.
IPCONFIG /registerdns = Refresh all DHCP leases and re-register DNS names.
IPCONFIG /displaydns = Display the contents of the DNS Resolver Cache.
IPCONFIG /showclassid adapter = Display all the DHCP class IDs allowed for adapter.
IPCONFIG /setclassid adapter [classid] = Modify the dhcp class id.

If the Adapter name contains spaces, use quotes: "Adapter Name"
wildcard characters * and ? allowed, see the examples below

The default is to display only the IP address, subnet mask and default gateway for each adapter bound to TCP/IP.

For Release and Renew, if no adapter name is specified, then the IP address leases for all adapters bound to TCP/IP will be released or renewed.

For Setclassid, if no ClassId is specified, then the ClassId is removed.

Examples:
> ipconfig ... Show information.
> ipconfig /all ... Show detailed information
> ipconfig /renew ... renew all adapters
> ipconfig /renew EL* ... renew any connection that has its
name starting with EL

> ipconfig /release *Con* ... release all matching connections,
eg. "Local Area Connection 1" or
"Local Area Connection 2"

> ipconfig /setclassid "Local Area Connection" TEST
... set the DHCP class ID for the
named adapter to = TEST

"Life is a grand adventure - or it is nothing." - Helen Keller

Related:

BROWSTAT - Get domain, browser and PDC info
NETSTAT - Display networking statistics (TCP/IP)
NETSH - Configure interfaces, routing protocols, filters, routes, RRAS
PATHPING - IP trace utility
PING - Test a network connection
Q192064 - Locate multiple preferred logon servers
Q813878 - How to block specific network protocols and ports.
Q313190 - Use IPSec IP Filter Lists
The Inq/Jon Honeyball - Routing to harden machines against attack
www.ipchicken.com
Equivalent bash command (Linux): lookupd -flushcache, ifconfig - IP configuration
Equivalent bash command (OS X): ipconfig / dscacheutil - View IP config / Query / flush the Directory Service cache


resource www.ss64.com

Read more...