2. Implement as shell scripts
ADRs are plain text files stored in a subdirectory of the project.
The tool needs to create new files and apply small edits to the Status section of existing files.
The tool is implemented as shell scripts that use standard Unix tools -- grep, sed, awk, etc.
The tool won't support Windows. Being plain text files, ADRs can be created by hand and edited in any text editor. This tool just makes the process more convenient.
Development will have to cope with differences between Unix variants, particularly Linux and MacOS X.