deleteitem45

DeleteItem45 is a command‑line utility that is part of the DataClean Suite, a collection of open‑source tools for bulk data manipulation. The utility was released in 2018 by the University of Delphi’s Software Engineering Group as a lightweight solution for removing items that match a specific identifier from large datasets. The identifier is specified by the user as a numeric code; the default code is 45, which is why the tool is often referred to in documentation as DeleteItem45.

The utility reads a source file, filters out rows where the specified field equals the target identifier, and writes the remaining records to a new output file. It supports several common data formats, including CSV, TSV, and JSON lines, and can be invoked from within shell scripts or other command‑line workflows. DeleteItem45 is implemented in Go, which gives it high performance and minimal dependencies, allowing it to process millions of records in a few seconds on a typical workstation.

The tool’s design follows the Unix philosophy of doing one job well. It includes options for case‑sensitive matching, verbose output, and a dry‑run mode that reports the number of rows that would be deleted without actually modifying the source file. DeleteItem45 is packaged under the MIT license and is available through the DataClean Suite’s GitHub repository. The utility is frequently cited in academic papers dealing with dataset hygiene and is used by data scientists, archivists, and developers who need a reliable way to purge unwanted entries from large data collections.