Simple and elegant command line argument parser for scripts that can be used as a shebang (Bash | Python | Perl etc.)
go get github.com/semk/argparse
cp $(go env GOPATH)/bin/argparse /usr/local/bin
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.
#!/usr/local/bin/argparse --executor=/bin/bash --arg=name::NoNameDefined::Name
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.
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")