A wrapper binary to exec a command in a pty, even if redirecting the output.
This allows logging the stdout and stderr (separately) of a process, without the output being different from what you'd see in the terminal if you weren't logging anything.
$ cargo install faketty
$ faketty bazel build :target >log/out 2>log/err ~~~~~~~~~~~~~~~~~~~ command to run
When redirecting stdout/err to a pipe or file, a process may detect the output is no longer going to a tty (because it has no width/height, baud rate, etc) and may change its behavior accordingly. For example many programs that involve a progress bar or colored text in a terminal disable those things when the output is not going to a terminal.
There is a script(1) command which makes it possible to redirect a command's terminal-style output by executing it inside a pseudoterminal (pty) – a bidirectional pipe that also has width, height, etc and tricks the process into thinking it is talking to a real terminal. However,
script only uses a single pty, which makes it impossible to demultiplex stdout and stderr to different places.
faketty command in this repo is similar to
script --quiet --return --command '...' /dev/null except that it preserves distinct stdout and stderr streams.
Licensed under either of LicenseApache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in this program by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.