Executing Commandline - Error

1

Hi, i’m on 4.3.3 and a heating rule that always starts in winter season suddenly does not work anymore. Any clue what the reason may be without changing or touching the system for a longer period of time. Curl works in terminal.

executeCommandLine("curl", "-X", "POST", "-d", "value=1803", "``http://192.168.1.10:8080/user/var/120/10102/0/0/12080``") executeCommandLine("curl", "-X", "POST", "-d", "value=280", "``http://192.168.1.10:8080/user/var/120/10101/0/0/12127``")

that is the beginning of the long long error logged message.

2025-11-02 10:15:04.017 [WARN ] [rg.openhab.core.io.net.exec.ExecUtil] - Error occurred when executing commandLine ‘[curl, -X, POST, -d, value=280, ``http://192.168.1.10:8080/user/var/120/10101/0/0/12127``]’
java.io.IOException: Cannot run program “curl”: error=0, Failed to exec spawn helper: pid: 951009, exit value: 1
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1143) ~[?:?]
at java.lang.ProcessBuilder.start(ProcessBuilder.java:1073) ~[?:?]
at org.openhab.core.io.net.exec.ExecUtil.executeCommandLine(ExecUtil.java:59) ~[?:?]
at org.openhab.core.model.script.actions.Exec.executeCommandLine(Exec.java:39) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[?:?]
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
at java.lang.reflect.Method.invoke(Method.java:569) ~[?:?]

Thanks for any hint what may have changed to check it out.

2

Those `` look weird. Try:

executeCommandLine("curl", "-X", "POST", "-d", "value=1803", "http://192.168.1.10:8080/user/var/120/10102/0/0/12080")
3

Note to self / whoever has the time to look into this:
We need to make sendHttpPostRequest easier to use for posting form data such as in this situation.

1 Like
4

Any chance you updated Java recently? That sometimes breaks executeCommandLine for me. Restarting OH solves it.

1 Like
5

sorry, the “ just look weird here, in my terminal window at the config file its all fine. but thanks, was worth giving it a try

6

Thanks a lot, for sure over summer there was a JAVA update, must have been without a reboot, system runs fine over weeks without any reboot.

After rebooting, all works fine immedately. thanks for your hint!!!