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Top Forums UNIX for Dummies Questions & Answers Name 10 commands every Linux and Unix admin should know Post 302095678 by sysgate on Thursday 9th of November 2006 06:33:22 AM
Old 11-09-2006
BOFH is correct, however, depending on your needs there may be a different set of "most essential commands" My example :
dig, traceroute, ping, whois, mail, ssh, ps, grep, perl, vi.
 

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whois(1)						      General Commands Manual							  whois(1)

NAME
whois - Internet username directory service SYNOPSIS
whois [-h server] name... The whois command looks up user, host, and organization names in the Network Information Center (NIC) database. OPTIONS
Specifies a whois server other than the default server rs.internic.net. DESCRIPTION
The name argument can specify the following: The name of a registered user The name of a registered Internet host The name of some other entity recognized by the whois server By default, the whois command queries the host rs.internic.net. The operands specified to the whois command are concatenated together (separated by white-space) and presented to the whois the server. The default action, unless directed otherwise with a special name is to do a very broad search, looking for matches to name in all types of records and most fields (such as name, nicknames, host name, and network address) in the database. For more information as to what name operands have special meaning, and how to guide the search, use the special name help. EXAMPLES
To display the NIC database entry for the organization osf.org, enter: whois osf.org Open Software Foundation (OSF-DOM) 11 Cambridge Center Cambridge, MAS 02142 Domain Name: OSF.ORG . . . SEE ALSO
DARPA Internet Request for Comment: NICKNAME/WHOIS (RFC 812) whois(1)
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