logpipe

A lightweight CLI tool for tailing and filtering structured JSON logs from multiple sources with live grep support.

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Installation

go install github.com/yourname/logpipe@latest

Or build from source:

git clone https://github.com/yourname/logpipe.git
cd logpipe
go build -o logpipe .

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Usage

Tail a log file and filter by a JSON field value:

logpipe tail app.log --filter "level=error"

Pipe logs from multiple sources and grep in real time:

logpipe tail app.log worker.log --grep "timeout"

Pretty-print raw JSON log output:

cat app.log | logpipe fmt

Flags

Flag	Description
--filter	Filter by JSON key=value pair
--grep	Live grep across streamed log output
--pretty	Pretty-print JSON output
--follow	Continuously tail the file (default)

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Requirements

• Go 1.21+

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Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.

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License

MIT