Musing with my Ubuntu installation did the following experiments as user "rony":
*/--------------- commands as normal user "rony" (no SUDO_* environment
variables set):/*
rony@rony-linux:~/work/oorexx/trunk$ *env | grep XDG*
/XDG_VTNR=7////XDG_SESSION_ID=c4////XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/rony////XDG_SESSION_TYPE=x11////XDG_DATA_DIRS=/usr/share/mate:/usr/share/mate:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/var/lib/snapd/desktop////XDG_SESSION_DESKTOP=mate////XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0////XDG_CURRENT_DESKTOP=MATE////XDG_SEAT=seat0///*/XDG_RUNTIME_DIR=/run/user/1000/*///XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session1////XDG_CONFIG_DIRS=/etc/xdg/xdg-mate:/etc/xdg/
rony@rony-linux:~/work/oorexx/trunk$ *whoami*
/rony/
rony@rony-linux:~/work/oorexx/trunk$ *ls -al $XDG_RUNTIME_DIR*
/total 0////drwx------ 9 rony rony 260 Dec 19 16:39 .////drwxr-xr-x 3 root
root 60 Dec 19 16:39
..////srw-rw-rw- 1 rony rony 0 Dec 19 16:35 bus////drwx------ 3 rony rony
60 Dec 19 16:35
dbus-1////drwx------ 2 rony rony 60 Dec 23 13:52 dconf////drwx------ 3 rony
rony 160 Dec 23
13:52 gnupg////dr-x------ 2 rony rony 0 Dec 19 16:35 gvfs////drwx------ 2
rony rony 100 Dec 19
16:39 keyring///*/-rw-rw-rw- 1 rony rony 0 Dec 19 16:36
.ooRexx-5.0.0-64.lock/**//**/srwxrwxrwx
1 rony rony 0 Dec 19 16:36 .ooRexx-5.0.0-64.service/*///drwx------ 2 rony
rony 80 Dec 19 16:35
pulse////drwxr-xr-x 2 rony rony 80 Dec 19 16:35 systemd////-rw------- 1
rony rony 0 Dec 19 16:35
update-notifier.pid////rony@rony-linux:~/work/oorexx/trunk$ /
rony@rony-linux:~/work/oorexx/trunk$ *env | grep SUDO*
*/--------------- same commands as sudo (the XDG* environment variables are
not set, there is no
home directory "/usr/root" rather "/root"):/*
rony@rony-linux:~/work/oorexx/trunk$ *sudo env | grep XDG*
rony@rony-linux:~/work/oorexx/trunk$ *sudo whoami*
/root/
rony@rony-linux:~/work/oorexx/trunk$ *sudo ls -al /root*
/total 112////drwx------ 24 root root 4096 Dec 19 16:37 .////drwxr-xr-x 29
root root 4096 Dec 11
16:40 ..////drwx------ 2 root root 4096 Mar 7 2018 .aptitude////-rw-r--r--
1 root root 3106 Feb
25 2012 .bashrc////drwx------ 10 root root 4096 Oct 24 2015
.cache////drwx------ 9 root root
4096 Jun 8 2015 .config////drwx------ 3 root root 4096 Jun 10 2013
.dbus////drwx------ 3 root
root 4096 Oct 25 2014 .gconf////drwx------ 2 root root 4096 Sep 30 2011
.gconfd////drwx------ 4
root root 4096 Feb 25 2012 .gnome2////drwx------ 2 root root 4096 Aug 3 2011
.gnome2_private////drwx------ 3 root root 4096 Sep 28 2016
.gnupg////drwxr-xr-x 2 root root 4096
Aug 29 2011 .gstreamer-0.10////drwx------ 2 root root 4096 Aug 2 2011
.gvfs////drwxr-xr-x 3 root
root 4096 Oct 15 2013 .java////drwx------ 2 root root 4096 Aug 29 2011
.kde////drwxr-xr-x 3 root
root 4096 Jul 27 2011 .libreoffice////drwx------ 3 root root 4096 Aug 2 2011
.local////drwx------ 3 root root 4096 Aug 2 2011
.mission-control///*/-rw-rw-rw- 1 root root 0
Dec 19 16:09 .ooRexx-5.0.0-64.lock/**//**/srwxrwxrwx 1 root root 0 Dec 19
16:37
.ooRexx-5.0.0-64.service/*///drwxr-xr-x 2 root root 4096 Feb 4 2017
.oracle_jre_usage////-rw-r--r-- 1 root root 148 Aug 17 2015
.profile////drwx------ 2 root root
4096 Oct 14 2014 .pulse////-rw------- 1 root root 256 Jun 7 2011
.pulse-cookie////drwxr-xr-x 2
root root 4096 Jan 12 2017 .rpmdb////drwx------ 2 root root 4096 Jun 7 2011
.ssh////drwx------ 4
root root 4096 Mar 18 2018 .synaptic////drwxrwxr-x 2 root root 4096 Feb 25
2012
Templates////-rw------- 1 root root 2983 Feb 6 2018 .viminfo/
rony@rony-linux:~/work/oorexx/trunk$
rony@rony-linux:~/work/oorexx/trunk$ *sudo env | grep root*
/MAIL=/var/mail/root LOGNAME=root USER=root USERNAME=root/
rony@rony-linux:~/work/oorexx/trunk$
rony@rony-linux:~/work/oorexx/trunk$ *sudo env | grep SUDO*
/SUDO_COMMAND=/usr/bin/env////SUDO_USER=rony////SUDO_UID=1000////SUDO_GID=1000/
rony@rony-linux:~/work/oorexx/trunk$
Obviously last Wednesday ooRexx ran with root privileges and created the lock
and service files
under "/root". Not sure whether this was caused by doing an "sudo dpkg -i
ooRexx-deb-packages".
Maybe a strategy could be: if determining that ooRexx executes as "root" (e.g.
comparing $LOGNAME to
"root"), then create the two special files in the root's homedirectory "/root".
Otherwise, if
running without the XDG* environment variables set, then maybe in the user's
home directory $HOME
(like on MacOSX)?
---rony
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