Signal by number

bash

pkill -USR1 myapp

Explanation

Send a custom signal to matching processes.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Signals Reference and Delivery

Signal only the oldest matching process.

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Signal the newest matching process.

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Handle a signal in a shell script.

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Signal every process in a process group.

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Count processes that match a pattern.

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Check whether a process exists and whether you can signal it.

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