django bash script pass requirements as bash arguments

Question

i have created this bash script to create django projects

#!/bin/bash
PROJECT_NAME=$1
ENV_NAME=$2
PROJECT_DIR="$HOME/$PROJECT_NAME"
echo $PROJECT_NAME;
echo $ENV_NAME;
mkdir -p "$PROJECT_NAME"
cd "$PROJECT_DIR"
python3 -m venv "$ENV_NAME"
. "$PROJECT_DIR/$ENV_NAME/bin/activate"
pip install django django-extensions django-debug-toolbar python-memcached djangorestframework
pip freeze > "$PROJECT_DIR/requirements.txt"
django-admin startproject "$PROJECT_NAME"
mkdir -p public
cd "$PROJECT_DIR/$PROJECT_NAME"
pwd
mkdir -p templates
mkdir -p static
cd templates
touch index.html base.html
cd ..
pwd
cd "$PROJECT_NAME"
mv settings.py settings_base.py
touch settings.py settings_local.py settings_local_sample.py
ls

when i run source file.sh project_name env it creates the project, i want to pass the requirements of the project as array argument in the bash , how i can do it

janos · Accepted Answer · 2019-10-18 08:01:47Z

1

The command arguments are in the $@ array. So you could pass the requirements as additional command line arguments. Then, after you set PROJECT_NAME to the first argument, do a shift to remove the first argument from $@. Then, after you set ENV_NAME to the (new) first argument, do a shift again. Then, $@ will contain only the remaining arguments = the list of requirements, so you can use that with pip install.

Minor changes in your script:

#!/usr/bin/env bash
PROJECT_NAME=$1; shift
ENV_NAME=$1; shift
...
pip install "$@"

And call the script with:

path/to/script.sh the_project_name the_env_name django django-extensions django-debug-toolbar python-memcached djangorestframework

If the list of requirements are already in a Bash array in the context where you call the script, then you can pass the array content as command arguments:

path/to/script.sh the_project_name the_env_name "${requirements[@]}"

edited Oct 18, 2019 at 8:01

answered Oct 18, 2019 at 7:56

janos

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