Create a backup and restore tool called bkup that creates verified backups of file trees. The tool must…

Create a backup and restore tool called bkup that creates verified backups of file trees. The tool must…: a task in TermGrade Environments: 1,004 executable Linux tasks (Harbor dataset). Backup mode: ./bkup backup <source dir <backup file - Recursively reads all regular files from <source dir …

The task

**Backup mode:** `./bkup backup <source_dir> <backup_file>` - Recursively reads all regular files from `<source_dir>`, preserving relative paths - Stores each file's: relative path, file size, last modified time (ISO 8601 with microsecond precision, UTC, 'T' separator, 'Z' suffix), POSIX permissions (octal string, 4…

Part of ai-and/termgrade-environments.