[GH-ISSUE #1324] How does ntfy/curl know if command ended successfully? #937

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opened 2026-05-07 00:28:55 +02:00 by BreizhHardware · 1 comment

BreizhHardware commented

2026-05-07 00:28:55 +02:00

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Originally created by @lockheed on GitHub (Apr 28, 2025).
Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/1324

❓ Question

I am just getting into setting up ntfy using "&&" and "||" but it would help to know how does curl or ntfy know a particular command ended successfully or in error.
For example
ping google.com || curl -d "Pinging google failed!" ntfy.src.com/ping

Does it look for "error" in output, or is it something else?

Originally created by @lockheed on GitHub (Apr 28, 2025). Original GitHub issue: https://github.com/binwiederhier/ntfy/issues/1324 :question: **Question**  I am just getting into setting up ntfy using "&&" and "||" but it would help to know how does curl or ntfy know a particular command ended successfully or in error. For example `ping google.com || curl -d "Pinging google failed!" ntfy.src.com/ping` Does it look for "error" in output, or is it something else?

BreizhHardware

2026-05-07 00:28:55 +02:00

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BreizhHardware commented

2026-05-07 00:28:56 +02:00

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@wunter8 commented on GitHub (Apr 28, 2025):

This depends on the specific shell language you're using. For example, that syntax could depend on how bash interprets whether a command succeeded or not (based on an exit code of the program).

So in this case, if ping exits successfully (with an exit code of 0), curl will not run. If ping fails (with a non-zero exit code), curl will run

@wunter8 commented on GitHub (Apr 28, 2025): This depends on the specific shell language you're using. For example, that syntax could depend on how `bash` interprets whether a command succeeded or not (based on an exit code of the program). So in this case, if `ping` exits successfully (with an exit code of `0`), `curl` will not run. If `ping` fails (with a non-zero exit code), `curl` will run