Hi,
I tested the functionality of system.path in a Fedora 21 workstation. The script was executed even though the file specified in PathExists=, /var/tmp/tst0, did not exist. Is there something I misunderstand or : - /etc/systemd/system/tst.service - /etc/systemd/system/tst.path - /usr/sbin/tst.sh Any help is greatly appreciated. -- Regards, Eric Lu [ylu@f21 ~]$ cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.17.4-301.fc21.x86_64 root=/dev/mapper/fedora-root ro rd.lvm.lv=fedora/swap rd.lvm.lv=fedora/root rhgb quiet LANG=en_US.UTF-8 systemd.log_level=debug systemd.log_target=kmsg log_buf_len=4M [ylu@f21 ~]$ [ylu@f21 ~]$ grep -i tst dmesg.txt [ 5.669801] systemd[1]: Installed new job tst.service/start as 212 [ 9.798848] systemd[1]: Starting Tst Controller Service... [ 9.799796] systemd[1]: About to execute: /usr/sbin/tst.sh [ 9.800232] systemd[1]: Forked /usr/sbin/tst.sh as 861 [ 9.800541] systemd[1]: tst.service changed dead -> start [ 9.802075] systemd[861]: Executing: /usr/sbin/tst.sh [ 10.915564] systemd[1]: Child 861 belongs to tst.service [ 10.915572] systemd[1]: tst.service: main process exited, code=exited, status=0/SUCCESS [ 10.915833] systemd[1]: tst.service changed start -> dead [ 10.915918] systemd[1]: Job tst.service/start finished, result=done [ 10.915955] systemd[1]: Started Tst Controller Service. [ 10.916102] systemd[1]: tst.service: cgroup is empty [ylu@f21 ~]$ [ylu@f21 ~]$ cat j0.txt Jun 13 21:02:39 f21 systemd[1]: Installed new job tst.service/start as 212 Jun 13 21:02:43 f21 systemd[1]: Starting Tst Controller Service... Jun 13 21:02:43 f21 systemd[1]: About to execute: /usr/sbin/tst.sh Jun 13 21:02:43 f21 systemd[1]: Forked /usr/sbin/tst.sh as 861 Jun 13 21:02:43 f21 systemd[1]: tst.service changed dead -> start Jun 13 21:02:43 f21 systemd[861]: Executing: /usr/sbin/tst.sh Jun 13 21:02:43 f21 logger[871]: /usr/sbin/tst.sh on Sat Jun 13 21:02:43 PDT 2015. Jun 13 21:02:43 f21 logger[884]: /usr/sbin/tst.sh Jun 13 21:02:43 f21 logger[887]: /usr/sbin/tst.sh Jun 13 21:02:43 f21 logger[890]: /usr/sbin/tst.sh on Sat Jun 13 21:02:43 PDT 2015 done! Jun 13 21:02:43 f21 tst.sh[861]: ls: cannot access /var/tmp/tst0: No such file or directory Jun 13 21:02:43 f21 tst.sh[861]: cat: /var/tmp/tst0: No such file or directory Jun 13 21:02:44 f21 systemd[1]: Child 861 belongs to tst.service Jun 13 21:02:44 f21 systemd[1]: tst.service: main process exited, code=exited, status=0/SUCCESS Jun 13 21:02:44 f21 systemd[1]: tst.service changed start -> dead Jun 13 21:02:44 f21 systemd[1]: Job tst.service/start finished, result=done Jun 13 21:02:44 f21 systemd[1]: Started Tst Controller Service. Jun 13 21:02:44 f21 systemd[1]: tst.service: cgroup is empty Jun 13 21:04:41 f21 systemd[1]: Got message type=method_call sender=:1.69 destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1/unit/tst_2eservice interface=org.freedesktop.DBus.Properties member=GetAll cookie=2 reply_cookie=0 error=n/a Jun 13 21:04:41 f21 systemd[1]: SELinux access check scon=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcon=unconfined_u:object_r:systemd_unit_file_t:s0 tclass=service perm=status path=/etc/systemd/system/tst.service cmdline=systemctl status tst: 0 [ylu@f21 ~]$ sudo su [sudo] password for ylu: [root@f21 ylu]# [root@f21 ylu]# systemctl status tst â tst.service - Tst Controller Service Loaded: loaded (/etc/systemd/system/tst.service; enabled) Active: inactive (dead) since Sat 2015-06-13 21:08:37 PDT; 1min 18s ago Process: 853 ExecStart=/usr/sbin/tst.sh (code=exited, status=0/SUCCESS) Main PID: 853 (code=exited, status=0/SUCCESS) Jun 13 21:08:37 f21 tst.sh[853]: ls: cannot access /var/tmp/tst0: No such file or directory Jun 13 21:08:37 f21 tst.sh[853]: cat: /var/tmp/tst0: No such file or directory Jun 13 21:08:37 f21 logger[890]: /usr/sbin/tst.sh on Sat Jun 13 21:08:37 PDT 2015 done! [root@f21 ylu]# [root@f21 ylu]# journalctl --no-pager --all --full > ~/j.txt [root@f21 ylu]# [root@f21 ylu]# cat /etc/systemd/system/tst.path # # [Unit] Description=Activate test Service # DefaultDependencies=no [Path] PathExists=/var/tmp/tst0 Unit=tst.service # [Install] # WantedBy=multi-user.target [root@f21 ylu]# [root@f21 ylu]# [root@f21 ylu]# cat /etc/systemd/system/tst.service # [Unit] Description=Tst Controller Service [Service] Type=oneshot Environment=TERM=linux # NotifyAccess=all ExecStart=/usr/sbin/tst.sh [Install] Also=tst.path WantedBy=multi-user.target [root@f21 ylu]# [root@f21 ylu]# cat /usr/sbin/tst.sh #!/usr/bin/env sh echo "$0 on `date`." | logger -p info echo "$0 `ls -al /var/tmp/tst0`" | logger -p info echo "$0 `cat /var/tmp/tst0`" | logger -p info echo "$0 on `date` done!" | logger -p info [root@f21 ylu]# [root@f21 ylu]# [root@f21 ylu]# ls -al /var/tmp/tst* ls: cannot access /var/tmp/tst*: No such file or directory [root@f21 ylu]# [root@f21 ylu]#
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