Madlib

Cookie-cutter for autogenerating bash scripts. Populates the boilerplate so scripters can focus on the substance.

The template includes ...

• unofficial bash strict mode
• SCRIPT_DIR environment variable
• git environment variables
• colored output - fail / success
• parsing arguments
• parsing yaml
• and more ...

🚀 Getting Started

Follow the series of prompts after cloning and calling script.sh.

💥 Barebones script - from source

git clone git@github.com:onescriptkid/madlib && pushd madlib > /dev/null
./madlib.sh -s -a0 barebones.sh
...
Created script:

        ~/onescriptkid/madlib/barebones.sh

💥 Script with prompts - from source

git clone git@github.com:onescriptkid/madlib && pushd madlib > /dev/null
./madlib.sh -s script_that_requires_argparsing.sh
...
Created script:

        ~/onescriptkid/madlib/script_that_requires_argparsing.sh

🐳 Barebones script - from docker

docker run -v /tmp:/tmp -it onescriptkid/madlib -s -a0
...
Created script:

        /tmp/madlib-XXXXoGjHjL/madlib_script.sh

🐳 Script with prompts - from docker

docker run -v /tmp:/tmp -it onescriptkid/madlib
...
Created script:

        /tmp/madlib-XXXXoGjHjL/madlib_script.sh

🇸🇴 See it live!

Download example output via curl

curl https://raw.githubusercontent.com/onescriptkid/madlib/master/examples/example.sh > /tmp/example.sh && chmod +x /tmp/example.sh

🌲 Dependencies

Older versions of Bash 4.X / 3.X should work, but are untested

• Bash 5.0.17(1)
• Ubuntu 20.04
• Yaml Parser requires
  • sed (GNU sed) 4.7
  • mawk 1.3.4 20200120

If missing, install with

sudo apt update && sudo apt install bash sed mawk -y

⚙️ For devs,

To test locally,

test_* prefix unit tests. To test, run

Example unit test for SCRIPT_DIR

./test/test_bash_script_dir.sh

...
test_absolute /tmp/madlib-XXX/script.sh
REALPATH   is: /tmp/madlib-NS1SFLpaz7
SCRIPT_DIR is: /tmp/madlib-NS1SFLpaz7

test_symlink_relative
REALPATH   is: /tmp/madlib-NS1SFLpaz7
SCRIPT_DIR is: /tmp/madlib-NS1SFLpaz7

test_space_in_pathname /abc/d ef/hi/script.sh
REALPATH   is: /tmp/madlib-NS1SFLpaz7/abc/d ef/hij
SCRIPT_DIR is: /tmp/madlib-NS1SFLpaz7/abc/d ef/hij

😇 For Maintainers,

To cut a new version,

List the top tag vX.X.X

git describe --tags --abbrev=0 --match "v[0-9]*"

Push a new tag vX.X.X+1

git tag -a "v1.0.2" -m "Release v1.0.2"
git push --tags

To build the docker image

./deploy/build.sh adds the repo contents to the Dockerfile and adds tags.

./deploy/build.sh
...
Step 12/12 : CMD [ /madlib/madlib.sh ]
 ---> Running in 145cfe78d5c4
Removing intermediate container 145cfe78d5c4
 ---> 6f7d5a86a88e
Successfully built 6f7d5a86a88e
Successfully tagged madlib:latest

To push a new docker image to dockerhub,

Login with docker login -u onescriptkid

./deploy/push pushes the madlib dockerimage to dockerhub

./deploy/push.sh
...
dc62e246cb08: Layer already exists 
a8df7183ce0b: Layer already exists 
1ad27bdd166b: Layer already exists 
v0.0.1-1-g557e9e0: digest: sha256:aa52c11054c87c939a24e5d62e974dfa4551ad4ed5d898fd4a19b5d8ee7d4ade size: 2401

Fix git issues

eval "$(ssh-agent -s)"
ssh-add ~/.ssh/id_ed25519_onescriptkid