rederr

Sometimes you just want to see stdin in red and stdout in white.

Usage

Usage: rederr [-h|--help] CMD [ARG] ...

    Runs CMD with stdout like this and stderr like this.

Environment variables:
    REDERR_STDOUT_PREFIX
        bytes to write before stdout; default: ""
    REDERR_STDOUT_SUFFIX
        bytes to write after stdout; default: ""
    REDERR_STDERR_PREFIX
        bytes to write before stderr; default: "\e[31m" (foreground red)
    REDERR_STDERR_SUFFIX
        bytes to write after stderr; default: "\e[0m" (reset)

Notes:
    CMD is launched with stdout and stderr as a pipe, not a virtual tty.

    If stderr and stdout are written close together, output may be out of order.

    rederr only adds additional output to stdout/stderr for formatting,
    if CMD emits ANSI escape codes, they will be present in the output.

    rederr exits with 111 in case of an internal errors.

Building and installation

Binary builds of rederr can be found at: https://abstract.properties/misc/rederr and https://abstract.properties/misc/rederr.com. Both are identical and have a SHA-256 checksum of 4047fd8848875f9441fc22bd6bb674c273d68ddd10a9d800d6cd80fdf50239bd.

These are αcτµαlly pδrταblε εxεcµταblε builds built with cosmopolitan libc, which means they are fat binary executables that run on practically any platform: Linux + Mac + Windows + FreeBSD + OpenBSD + NetBSD + BIOS on AMD64 and ARM64.

Platform notes:

• Windows: If you are running on Windows, the .com file extension is needed for the command to execute correctly.
• zsh / fish: If you use zsh or fish shells, you may need to update to a recent version (see https://github.com/jart/cosmopolitan/issues/88).
• MacOS: These binaries work on both Intel and Apple silicon.

End up using this on a non-Linux/Mac/Windows platform? Please reach out and let me know.

https://abstract.properties/work/rederr.html