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Edmund J. Sutcliffe
Thoughtful Solutions, Creatively Implemented and Communicated
Edmund's IP Quick Reference
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for a printable version of this page.
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Command
|
Operating System
|
Description
|
| telnet remotesys |
Unix, Linux, Windows |
Log on to remote system, command line will
be available |
| ftp remotesys |
Unix, Linux, Windows |
Connect to remote system to send and receive
files. Restrictions to directories will be applied |
| rlogin remotesys |
Unix, Linux
|
Like telnet, requires set up for trusted
user so that password is not required. |
| rsh remotesys [cmd] |
Unix, Linux |
Connect to remote system without password
and execute command. Trusted user only. |
| rcp [host:]source [host2:]dest |
Unix, Linux |
Remote copy between systems. Requires trusted
user set up. Can copy directories recursively using -r. |
| |
|
rlogin, rsh, rcp require either /etc/hosts.equiv,
or $HOME/.rhosts to be set up. |
| netstat |
Unix, Linux, Windows |
Network statistics for your system. Information
such as ports in use, routing tables (-r). |
| ifconfig [interface] |
Unix, Linux
Windows ipconfig
|
Network interface configuration information.
IP address, MAC address, netmask. |
| arp |
Unix, Linux, Windows |
IP address to local MAC address relations.
Local network only. |
| nslookup [host or IP] |
Unix, Linux, NT |
Find nameservers and mail servers names or IP addresses.
Check DNS configuration.
|
| w |
Unix, Linux |
Who's logged in information. |
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Command
|
Operating System
|
Description
|
| finger [username] |
Unix, Linux, NT |
Descriptive info on system users |
| ypcat |
Unix,Linux |
List information about NIS configuration |
| traceroute |
Unix, Linux
Windows tracert
|
Trace packet routing through a network |
| ping [ip or host] |
Unix, Linux, Windows |
Check if host is alive, or trace routes through
network. |
Using nslookup
nslookup
> www.ta.com
Server: freeweb.net
Address: 10.0.3.1
Name: ta.com
Addresses: 194.32.3.1, 194.36.3.1
Options for use with set
type=MX search for mail servers
type=CNAME search for canonical name (alias)
type=SOA search for Authority server
Telnet as a debug utility
telnet hostname portnumber
telnet my.mailserver.com 25
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