argparse

Simple and elegant command line argument parser for scripts that can be used as a shebang (Bash | Python | Perl etc.)

Installation

go get github.com/semk/argparse
cp $(go env GOPATH)/bin/argparse /usr/local/bin

Usage

Usage of ./argparse:
  -arg value
    	Define custom argument to the program. Format: name::default:desc
  -executor string
    	Path to the script executor (set this to shebang (#!)) (default "/bin/bash")

And the last arguments can be the script with the arguments to be called.

in scripts #!

#!/usr/local/bin/argparse --executor=/bin/bash --arg=name::NoNameDefined::Name

direct usage

argparse --executor=/bin/bash --arg=name::NoNameDefined::Name printname.sh --name Sreejith

The defined args would then be available as capitalized envirionment variables with the ARG_<OPTION_NAME> format.

Example

This example shows how argparse can be used as a #! in a bash script for commandline parsing. The following file is named printname.sh.

#!/usr/local/bin/argparse --executor=/bin/bash --arg=name::NoNameDefined::Name

echo "This program prints names passed to the argument --name."
echo "Name: ${ARG_NAME}"

$ ./printname.sh --name Sreejith
This program prints names passed to the argument --name.
Name: Sreejith

$ ./printname.sh                
This program prints names passed to the argument --name.
Name: NoNameDefined

$ ./printname.sh --help
Usage of ./printname.sh:
  -name string
    	Name (default "NoNameDefined")