ssh-last

NOTES

• The -? option requires perl-doc
  otherwise the full source code is shown instead of the trailing POD only
• Documentation like manpages can be created with pod2man or similar tools

TESTS

ssh-last was (except the strikedtrough ones) successfully tested on the following systems:

• FreeBSD
• DragonFlyBSD
• OpenBSD
• pfSense
  • 2.6.0
• OPNSense
• Guix
  • 1.3.0
• Slackware
  • 15
• AlmaLinux
  • 8
  • 9
• nixOS
• vyos (Debian)
• Parabola
  • systemd Edition
  • openRC Edition
• Manjaro
• Mageia
  • 8
• Arch
• Alpine
• Fedora
  • 34
    • dnf install perl-Time-Piece
  • 35
  • 36
  • 37
• CentOS Stream
  • 8
    • journal not persistent
    • dnf install perl-Time-Piece
    • dnf install perl-Memoize
  • 9
    • journal not persistent
• Oracle Linux
  • 8.7
    • journal not persistent
    • no Perl installed
    • dnf install oracle-epel-release-el8
    • dnf install perl
    • dnf install perl-Time-Piece
    • dnf install perl-Memoize
  • 9.1
    • journal not persistent
    • no Perl installed
    • dnf install oracle-epel-release-el9
    • dnf install perl
• Rocky Linux
  • 8.6
    • journal not persistent
    • dnf install perl-Time-Piece
    • dnf install perl-Memoize
  • 9.1
    • journal not persistent
• Devuan
  • 2
  • 3
  • 4
  • 5
• Debian
  • Sid
    • journal persistent
    • https://micronews.debian.org/2021/1628949223.html
  • Bookworm
    • journal persistent
    • https://micronews.debian.org/2021/1628949223.html
  • Bullseye
    • journal persistent
    • https://micronews.debian.org/2021/1628949223.html
  • Buster
    • journal not persistent
• Ubuntu
  • 14.04
    • Too old: sshd logs Disconnect in other format (and without port)
  • 16.04
    • journal not persistent
  • 18.04
  • 20.04
  • 22.04
• Raspbian
  • Bullseye
• Parrot
  • 5
• PureOS
  • 9
  • 10
• Pardus
  • 21.3
• Trisquel
  • 9
  • 10
• OpenSuse
  • TumbleWeed
  • Leap
    • 15.2
      • journal not persistent
      • has logfiles
    • 15.3
      • journal not persistent
      • has NO logfiles
    • 15.4
      • journal not persistent
      • has logfiles again
• void Linux
  • no Perl installed
    • xbps-install perl
  • no journalctl
  • no logfiles
    • https://docs.voidlinux.org/config/services/logging.html
    • xbps-install rsyslog
    • ln -s /etc/sv/rsyslogd/ /var/service
    • /var/log/messages
    • log format of OpenSUSE leap matches

REFS

• https://www.golinuxcloud.com/enable-persistent-logging-in-systemd-journald/
• https://linuxconfig.org/introduction-to-the-systemd-journal

TODOS

• OSX
  • https://stackoverflow.com/questions/334686/how-can-i-detect-the-operating-system-in-perl
  • sw_vers
  • older editions (10.8.5) still have /var/log/ and could be made to work
    • cat /var/log/system.log
  • newer editions use syslog or some log command
    • https://stackoverflow.com/questions/43382825/where-to-find-sshd-logs-on-macos-sierra
    • https://discussions.apple.com/thread/7910499
    • https://discussions.apple.com/thread/1735247