linux - systemctl show does not show several properties -

i working systemctl value of environmentfile property ssh.service unit file using command systemctl show ssh.service -p environmentfile returns empty result.

the unit file contains property. example unit file looks (cat /lib/systemd/system/ssh.service):

[unit] description=openbsd secure shell server after=network.target auditd.service conditionpathexists=!/etc/ssh/sshd_not_to_be_run  [service] environmentfile=-/etc/default/ssh execstart=/usr/sbin/sshd -d $sshd_opts execreload=/bin/kill -hup $mainpid killmode=process restart=on-failure restartpreventexitstatus=255 type=notify  [install] wantedby=multi-user.target alias=sshd.service 

moreover if systemctl show ssh.service | grep environmentfile get:

environmentfile=/etc/default/ssh (ignore_errors=yes) 

almost other properties work expected, example systemctl show ssh.service -p after returns extended dependencies:

after=network.target auditd.service systemd-journald.socket basic.target sysinit.target system.slice 

the same problem property conditionpathexists, in case grep doesn't show property (systemctl show ssh.service | grep conditionpathexists prints nothing).

why happen? , how environmentfile property unit file without using grep?

i've reproduced issue missing environmentfile in systemd 229 , cross referenced documentation systemctl news file latest release of systemd see if there mentions of behavior being changed. there not.

this appears bug in systemd. documentation systemctl implies work, when reviewing documentation show , --property. noted, property there if grep it.

i encourage search through existing open issues systemd see if there's open issue this. if not, open new issue report.

if behavior working intended, man systemctl docs should updated clarify that.