28 lines
837 B
Nix
Executable File
28 lines
837 B
Nix
Executable File
{ pkgs }:
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pkgs.writeShellApplication {
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name = "runbg";
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runtimeInputs = with pkgs; [
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coreutils # Provides `basename`, `which`, etc.
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bash # Provides the Bash shell
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util-linux # Provides `tty`
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];
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text = ''
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#!/usr/bin/env bash
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[ $# -eq 0 ] && { # $# is number of args
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echo "$(basename "$0"): missing command" >&2
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exit 1
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}
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prog="$(which "$1")" # see below
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[ -z "$prog" ] && {
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echo "$(basename "$0"): unknown command: $1" >&2
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exit 1
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}
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shift # remove $1, now $prog, from args
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tty -s && exec </dev/null # if stdin is a terminal, redirect from null
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tty -s <&1 && exec >/dev/null # if stdout is a terminal, redirect to null
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tty -s <&2 && exec 2>&1 # stderr to stdout (which might not be null)
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"$prog" "$@" & # $@ is all args
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'';
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}
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