Package cmd runs external commands with concurrent access to output and status. It wraps the Go standard library os/exec.Command to correctly handle reading output (STDOUT and STDERR) while a command is running and killing a command. All operations are safe to call from multiple goroutines.

Package fastuuid provides UUID generation of 192 bit universally unique identifiers. It also provides simple support for 128-bit RFC-4122 V4 UUID strings.

Package cpu implements processor feature detection used by the Go standard library.

The semver package provides the ability to work with semantic versions. Specifically it provides the ability to:

• Parse semantic versions

• Sort semantic versions

• Check if a semantic version fits within a set of constraints

• Optionally work with a v prefix

This package provides a cron expression parser in the Go language. Given a cron expression and a time stamp, you can get the next time stamp which satisfies the cron expression.

Package uuid provides implementations of the Universally Unique Identifier (UUID), as specified in RFC-4122 and the Peabody RFC Draft (revision 03).

This package parses text into shell arguments. Based on the cpan module Parse::CommandLine.

This package provides a functionality to work with recurrence rules for calendar dates. It offers a complete implementation of the RFC 2445 specification.

Package circllhist provides an implementation of Circonus fixed log-linear histogram data structure. This allows tracking of histograms in a composable way such that accurate error can be reasoned about.

Golden files (.golden) contain the raw expected output of tests,which can contain control codes and escape sequences. golden package provides an API for comparing Golden files.

This package provides a more structured and controlled goroutines implementation.

This package provides a collection various self sufficient Golang sub-packages:

• bytereplacer - provides a utility for replacing parts of byte

• ctxutil - contains golang.org/x/net/context related utilities

• errorutil - helps make better error messages

• fault - handles fault injection for testing

• jsonconfig - defines a helper type for JSON objects to be used for configuration

• legal - provides in-process storage for compiled-in licenses

• lock - provides a file locking library

• media/heif - reads HEIF containers, as found in Apple HEIC/HEVC images

• must - contains helpers that panic on failure

• net/throttle - provides a net.Listener that returns artificially-delayed connections for testing real-world connectivity slices

• oauthutil - contains OAuth 2 related utilities

• osutil - contains os level functions

• readerutil - contains io.Reader types

• readerutil - provides and operates on io.Readers

• reflectutil - contains reflect utilities

• rollsum - implements rolling checksums similar to apenwarr's bup, which is similar to librsync

• sort - provides primitives for sorting slices and user-defined collections

• strutil - contains string and byte processing functions

• syncutil/singleflight - provides a duplicate function call suppression mechanism

• syncutil/syncdebug - contains facilities for debugging synchronization problems

• syncutil - provides various synchronization utilities

• testing/functest - contains utilities to ease writing table-driven tests for pure functions and method

• types - provides various common types

• wkfs - implements the pluggable well-known filesystem abstraction layer

• writerutil - contains io.Writer types

• xdgdir - implements the Free Desktop Base Directory specification for locating directories

This package provides a fast and simple way to set a value in a JSON document.

Goversion scans a directory tree and, for every executable it finds, prints the Go version used to build that executable.

The tview package implements rich widgets for terminal based user interfaces. The widgets provided with this package are useful for data exploration and data entry.

Hebcal's hdate package converts between Hebrew and Gregorian dates.

This package provides a CLI build from the go-github-com-tklauser-numcpus source.

go-opt is a library to parse command line arguments based on tag annotations on struct fields. It came as a spin-off from aerc to deal with its internal commands.

This package provides functionality for detecting natural languages and scripts (writing systems). Languages are represented by a defined list of constants, while scripts are represented by RangeTable.

The OCI Image Format project creates and maintains the software shipping container image format spec (OCI Image Format).

This package provides an extendable argument parser for Golang. Mostly follows the GNU @urlhttps://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html, Program Argument Syntax Conventions.

Tengo is a small, dynamic, fast, secure script language for Go. Features:

• simple and highly readable syntax

• dynamic typing with type coercion

• higher-order functions and closures

• immutable values

• securely embeddable and extensible

• compiler/runtime written in native Go (no external deps or cgo)

• executable as a standalone language/REPL

• use cases: rules engine, state machine, data pipeline, transpiler

This package provides a command line interface (CLI) tool.

Package levenshtein implements distance and similarity metrics for strings, based on the Levenshtein measure.

This package provides a useful boilerplate and organizational information for all OCI projects.