58 lines
1.3 KiB
Perl
58 lines
1.3 KiB
Perl
#!/usr/bin/perl -P
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# $RCSfile: scan_last,v $$Revision: 4.1 $$Date: 92/08/07 17:20:35 $
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# This reports who was logged on at weird hours
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($dy, $mo, $lastdt) = split(/ +/,`date`);
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open(Last, 'exec last 2>&1 |') || die "scan_last: can't run last";
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while (<Last>) {
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#if defined(mc300) || defined(mc500) || defined(mc700)
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$_ = substr($_,0,19) . substr($_,23,100);
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#endif
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next if /^$/;
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(print),next if m|^/|;
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$login = substr($_,0,8);
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$tty = substr($_,10,7);
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$from = substr($_,19,15);
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$day = substr($_,36,3);
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$mo = substr($_,40,3);
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$dt = substr($_,44,2);
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$hr = substr($_,47,2);
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$min = substr($_,50,2);
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$dash = substr($_,53,1);
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$tohr = substr($_,55,2);
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$tomin = substr($_,58,2);
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$durhr = substr($_,63,2);
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$durmin = substr($_,66,2);
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next unless $hr;
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next if $login eq 'reboot ';
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next if $login eq 'shutdown';
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if ($dt != $lastdt) {
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if ($lastdt < $dt) {
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$seen += $dt - $lastdt;
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}
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else {
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$seen++;
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}
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$lastdt = $dt;
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}
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$inat = $hr + $min / 60;
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if ($tohr =~ /^[a-z]/) {
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$outat = 12; # something innocuous
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} else {
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$outat = $tohr + $tomin / 60;
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}
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last if $seen + ($inat < 8) > 1;
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if ($inat < 5 || $inat > 21 || $outat < 6 || $outat > 23) {
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print;
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}
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}
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