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Full Discussion: Uniq and sort -u
Top Forums UNIX for Dummies Questions & Answers Uniq and sort -u Post 302927655 by Corona688 on Thursday 4th of December 2014 10:28:53 AM
Old 12-04-2014
50 names -- or 50,000 -- is easily small enough to store in a table or array of some kind, just record what names you see and print them all when done.

Code:
awk '{ A[$1] } END { for(X in A) print X }' inputfile | sort

This method should be efficient for anything up to tens of thousands of (distinct) names.

Last edited by Corona688; 12-04-2014 at 01:49 PM..
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chosts(1M)						  System Administration Commands						chosts(1M)

NAME
chosts - expand cluster names into host names SYNOPSIS
$CLUSTER_HOME/bin/chosts name [name...] DESCRIPTION
The chosts utility expands the arguments into a list of host names. OPERANDS
The following operands are supported: name The parameter name can be a hostname or a cluster name. If name is a hostname, it is expanded to be a hostname. If name is a cluster name, that is, an entry exists in the /etc/clusters database (or a NIS or NIS+ map), it is expanded into the list of hosts that make up that cluster, as specified in the database. The list is typically used by programs that wish to operate on a list of hosts. If an entry for clusters has been made in the /etc/nisswitch.conf file, then the order of lookups is controlled by that entry. If there is no such file or no such entry, then the nameservice look up order is implicitly nis files. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWccon | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
ccp(1M), cconsole(1M), cports(1M), crlogin(1M), cssh(1M), ctelnet(1M), clusters(4), attributes(5) Sun Cluster 3.2 8 Sep 2007 chosts(1M)
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