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### 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
|
