# stdbuf > Run a command with modified buffering operations for its standard streams. > More information: . - Change `stdin` buffer size to 512 KiB: `stdbuf {{[-i|--input]}} 512K {{command}}` - Change `stdout` buffer to line-buffered: `stdbuf {{[-o|--output]}} L {{command}}` - Change `stderr` buffer to unbuffered: `stdbuf {{[-e|--error]}} 0 {{command}}`