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48 lines
1.1 KiB
48 lines
1.1 KiB
1 month ago
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# `siginfo`
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[](https://travis-ci.org/eemilbayes/siginfo)
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> Utility module to print pretty messages on SIGINFO/SIGUSR1
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`SIGINFO` on BSD / macOS and `SIGUSR1` on Linux, usually triggered by
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`Ctrl + T`, are by convention used to print information about
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a long running process internal state. Eg. `dd` will tell you how many blocks it
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has written and at what speed, while `xz` will tell you progress, compression
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ratio and estimated time remaining.
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This module wraps both signals, checks if the process is connected to TTY and
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lets you do whatever you want.
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## Usage
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```js
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var siginfo = require('siginfo')
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var pkg = require('./package.json')
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siginfo(function () {
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console.dir({
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version: pkg.version,
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uptime: process.uptime()
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})
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})
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```
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## API
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### `var removeListener = siginfo(queryFn, [force])`
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`queryFn` can be used for whatever you want (logging, sending a UDP message, etc.).
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Setting `force = true` will attach the event handlers whether a TTY is present
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or not.
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## Install
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```sh
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npm install siginfo
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```
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## License
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[ISC](LICENSE)
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