While pursuing a career in freelance IT, I found it increasingly difficult to organize my invoices in a manner which was both meaningful AND conveniently queriable/searchable. I tried using Libreoffice Base (with SQL), but it seemed that to implement the features I wanted, I would need to put in more work than I was willing. So, then I turned to LibreOffice Calc. Calc was much easier to interface with, however it was unable to perform even some of the crucial queries that I had performed in Base.
Finally, after looking at the selection of I.T.-oriented Invoice software available for linux,
CLInvoice came into being.
CLInvoice (short for "CLI Invoice") is a command-line application that can
eventually read, write, display, query, and binary search information about support tickets, time sheets, and invoices. It will automatically calculate tedious things such as your billable hours, client billing amounts, and net income per year (for tax purposes). It will also support a variety of queries, but eventually there are plans to implement a query syntax for custom queries that have not been programmed in directly.
dart bin/main.dart help for usage.
dart2native bin/main.dart -o clinvoice and then
mv ./clinvoice /usr/bin.
* Make sure to
CLINVOICE_PATH in your shell