Create a command-line tool backup tool that performs verified backup and restore operations on directories…

Create a command-line tool backup tool that performs verified backup and restore operations on directories…: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). backup : Creates a compressed tar archive of a source directory, computes a SHA-256 checksum of the archive…

The task

**backup**: Creates a compressed tar archive of a source directory, computes a SHA-256 checksum of the archive, and stores both in a backup location. The archive filename is `<basename>_<timestamp>.tar.gz` where timestamp is ISO 8601 UTC with the format `YYYY-MM-DDTHH-MM-SSZ`. The checksum is stored in a companion…

Part of ai-and/termgrade-environments.