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Full Discussion: Unique Result
Top Forums Shell Programming and Scripting Unique Result Post 302162421 by dennis.jacob on Tuesday 29th of January 2008 01:19:48 AM
Old 01-29-2008
One method:

Code:
 users | tr ' ' '\n' | sort | uniq

 

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USERS(1)                                                           User Commands                                                          USERS(1)

NAME
users - print the user names of users currently logged in to the current host SYNOPSIS
users [OPTION]... [FILE] DESCRIPTION
Output who is currently logged in according to FILE. If FILE is not specified, use /var/run/utmp. /var/log/wtmp as FILE is common. --help display this help and exit --version output version information and exit AUTHOR
Written by Joseph Arceneaux and David MacKenzie. REPORTING BUGS
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report users translation bugs to <http://translationproject.org/team/> COPYRIGHT
Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
getent(1), who(1) Full documentation at: <http://www.gnu.org/software/coreutils/users> or available locally via: info '(coreutils) users invocation' GNU coreutils 8.28 January 2018 USERS(1)
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