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) User Commands whois(1)
NAME
whois - Internet user name directory service
SYNOPSIS
whois [-h host] identifier
DESCRIPTION
whois searches for an Internet directory entry for an identifier which is either a name (such as ``Smith'') or a handle (such as ``SRI-
NIC''). To force a name-only search, precede the name with a period; to force a handle-only search, precede the handle with an exclamation
point.
To search for a group or organization entry, precede the argument with * (an asterisk). The entire membership list of the group will be
displayed with the record.
You may of course use an exclamation point and asterisk, or a period and asterisk together.
EXAMPLES
Example 1: Using The whois Command
The command:
example% whois Smith
looks for the name or handle SMITH.
The command:
example% whois !SRI-NIC
looks for the handle SRI-NIC only.
The command:
example% whois .Smith, John
looks for the name JOHN SMITH only.
Adding ... to the name or handle argument will match anything from that point; that is, ZU ... will match ZUL, ZUM, and so on.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWrcmdc |
+-----------------------------+-----------------------------+
SEE ALSO
attributes(5)
SunOS 5.10 6 Nov 2000 whois(1)