A BASH script which acts as a simple task runner like Just or abused Makefiles.

dev.sh

#!/usr/bin/env bash

# This script allows you to run tasks with `dev.sh TASKNAME`.
# Create a function and assign the function to a desired argument.
# For example the function `run` can be executed with:
# `dev.sh run` or `dev.sh start`
# If no argument is provided it will show the available options and their
#  description.

declare -A tasks
declare -A descriptions

run () {
    echo "I'm a command."
}
descriptions["run"]="Run the project."
tasks["run"]=run
descriptions["start"]="Alias for run."
tasks["start"]=run

setup () {
    echo "Another command."
}
tasks["setup"]=setup
descriptions["setup"]="Setup the project."

# Main logic to select the function matching the argument. {
# only one task at a time
if [ $# != 1 ]; then
    printf "usage: dev <task_name>\n\n"
    for task in "${!tasks[@]}"
    do
        echo "$task - ${descriptions[$task]}"
    done

else
    # Check if task is available
    if [[ -v "tasks[$1]" ]] ; then
        ${tasks["$1"]}
    else
        echo "Task not found."
    fi
fi
# }