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GNU Recutils ¶

This manual documents version 1.9 of the GNU recutils.

This manual is for GNU recutils (version 1.9, 19 September 2024).

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “GNU Free Documentation License”.

1 Introduction
- 1.1 Purpose
- 1.2 A Little Example
2 The Rec Format
- 2.1 Fields
- 2.2 Records
- 2.3 Comments
- 2.4 Record Descriptors
3 Querying Recfiles
- 3.1 Simple Selections
- 3.2 Selecting by Type
- 3.3 Selecting by Position
- 3.4 Random Records
- 3.5 Selection Expressions
- 3.6 Field Expressions
- 3.7 Sorted Output
4 Editing Records
- 4.1 Inserting Records
- 4.2 Deleting Records
- 4.3 Sorting Records
5 Editing Fields
- 5.1 Adding Fields
- 5.2 Setting Fields
- 5.3 Deleting Fields
- 5.4 Renaming Fields
6 Field Types
- 6.1 Declaring Types
- 6.2 Types and Fields
- 6.3 Scalar Field Types
- 6.4 String Field Types
- 6.5 Enumerated Field Types
- 6.6 Date and Time Types
- 6.7 Other Field Types
7 Constraints on Record Sets
- 7.1 Mandatory Fields
- 7.2 Prohibited Fields
- 7.3 Allowed Fields
- 7.4 Keys and Unique Fields
- 7.5 Singular Fields
- 7.6 Size Constraints
- 7.7 Arbitrary Constraints
8 Checking Recfiles
- 8.1 Syntactical Errors
- 8.2 Semantic Errors
9 Remote Descriptors
10 Grouping and Aggregates
- 10.1 Grouping Records
- 10.2 Aggregate Functions
11 Queries which Join Records
- 11.1 Foreign Keys
- 11.2 Joining Records
12 Auto-Generated Fields
- 12.1 Counters
- 12.2 Unique Identifiers
- 12.3 Time-Stamps
13 Encryption
- 13.1 Confidential Fields
- 13.2 Encrypting Files
- 13.3 Decrypting Data
14 Generating Reports
- 14.1 Templates
15 Interoperability
- 15.1 CSV Files
- 15.2 Importing MDB Files
16 Bash Builtins
- 16.1 readrec
17 Invoking the Utilities
- 17.1 Invoking recinf
- 17.2 Invoking recsel
- 17.3 Invoking recins
- 17.4 Invoking recdel
- 17.5 Invoking recset
- 17.6 Invoking recfix
- 17.7 Invoking recfmt
- 17.8 Invoking csv2rec
- 17.9 Invoking rec2csv
- 17.10 Invoking mdb2rec
18 Using ob-rec.el
- 18.1 Setup
- 18.2 Usage
- 18.3 Header Arguments
- 18.4 Warnings
19 Regular Expressions
20 Date input formats
- 20.1 General date syntax
- 20.2 Calendar date items
- 20.3 Time of day items
- 20.4 Time zone items
- 20.5 Combined date and time of day items
- 20.6 Day of week items
- 20.7 Relative items in date strings
- 20.8 Pure numbers in date strings
- 20.9 Seconds since the Epoch
- 20.10 Specifying time zone rules
- 20.11 Authors of parse_datetime
Appendix A GNU Free Documentation License
Concept Index

GNU Recutils ¶

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