CopyQueue

CopyQueue is a macOS application that manages file copy and move operations. It allows pausing, resuming, and scheduling data transfers. The software handles copies to USB drives, network shares, internet downloads, and FTP servers. It manages transfer queues with prioritization and bandwidth limits.

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• Pause and Resume. This function stops an ongoing file transfer. Resuming continues from the point of interruption. It operates after system restarts or network disconnections. Resuming works with partially copied files. It does not require restarting the transfer from the beginning.
• Transfer Queue. The interface displays a list of pending and active copy jobs. Users add files or folders to the queue. Queue management allows reordering items. Transfers are processed sequentially or concurrently based on the configuration.
• File Prioritization. Items in the queue are manually reorganized. An automatic sorting system orders by size or estimated time. Small files can complete first to free up space. Urgent files are moved to the top of the list.
• Bandwidth Limit. A slider or numeric field defines the maximum transfer speed. The limitation applies to all network operations or a specific one. It prevents connection saturation during peak hours. It allows using the internet while copying large files.
• Task Scheduling. A calendar and time picker postpone transfers. Operations start at a defined time, such as during nighttime hours. Scheduling works with recurring or one-time tasks. It executes copies when the network has lower usage.
• Integrity Verification. An algorithm compares the source and destination files after copying. Verification calculates checksums or performs a binary comparison. It confirms that every byte was transferred correctly. It is relevant for unstable connections or with older storage media.
• Automatic Retry. The software detects connection failures or I/O errors. A mechanism retries the transfer after a configurable interval. The maximum number of retries is defined in preferences. It continues with the next file if the retry repeatedly fails.
• Parallel Operations. Configuration adjusts the number of simultaneous transfers. Multiple files are copied at once to the same or different destinations. It increases the utilization of network or disk capacity. Individual monitoring shows the progress of each operation.
• Activity Log. A text file saves details of each completed or failed transfer. The log includes timestamps, file names, sizes, and speeds. It is reviewed for auditing or troubleshooting. Log retention is configured by time or file size.
• Command Line Interface. A terminal tool executes CopyQueue operations. Scripts automate recurring copy tasks. Parameters define source, destination, and options like bandwidth limit. It integrates CopyQueue into system administration workflows.
• Resource Monitor. A panel displays real-time statistics during transfers. Metrics include instantaneous speed, average speed, and remaining time. CPU, disk, and network usage graphs present the system impact. It helps identify bottlenecks in hardware.
• Detailed Error Management. Error messages specify the cause of a transfer failure. Error codes differentiate between permission, disk space, or network issues. Solution suggestions appear for common errors. Errors do not stop the entire queue, only the problematic item.

CopyQueue is developed by Curio Software. Development began in the year 2002. The programming language used is Objective-C with Cocoa interfaces for macOS.

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