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use strict;
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use strict;
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use warnings;
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use warnings;
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use File::Slurp; # apt install -y libfile-slurp-perl
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use File::Slurp; # apt install -y libfile-slurp-perl
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# It is difficult to tell who is on line with a UI based Linux system
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# as all the cli functions assume the other are logged in via cli.
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#
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# This script determines all "real users" (UUID > 1000, but not 'nobody')
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# and then does a ps aux to see if any of them are online.
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# Copyright 2024 Daily Data, Inc.
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#
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# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
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# conditions are met:
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#
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# Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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# Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the distribution.
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# Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
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# NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# define the version number
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# see https://metacpan.org/pod/release/JPEACOCK/version-0.97/lib/version.pod
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use version;
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our $VERSION = version->declare("0.0.1");
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my @users;
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my @users;
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my @passwords = read_file( '/etc/passwd' );
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my @passwords = read_file( '/etc/passwd' );
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while ( my $line = pop @passwords ) {
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while ( my $line = pop @passwords ) {
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next if $line =~ m/^#/;
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next if $line =~ m/^#/;
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