Quick Tip

Harnessing `stdbuf` for Unbuffered Command Output

Challenge: When running certain commands, especially in scripts or when piping output, you might encounter delays or incomplete output because standard output is buffered. This is common with commands that produce output incrementally.

The Solution: Use the `stdbuf` command to control the buffering of command output.

stdbuf -o L your_command_here

Why it works: The `-o L` option tells `stdbuf` to set the standard output stream to be line-buffered. This means output will be flushed line by line, rather than waiting for a larger buffer to fill, ensuring more immediate visibility and responsiveness.

Pro-Tip: You can also use `-o 0` to disable output buffering entirely, which is useful for performance-critical applications or when you need the absolute minimum latency.

Linux Tips & Tricks | © ngelinux.com | 5/1/2026