Go Commentary #10: Script, Telemetry

Script: Making it easy to write shell-like scripts in Go

• Go library that simplifies writing shell-like scripts by providing a fluent API for common operations like file manipulation, text processing, and command execution.

• Key features:

  • Chainable methods for piping operations
  • Easy file and directory operations
  • Text processing functions (grep, sed-like replacements)
  • Command execution and output handling
  • Error handling integrated into the API

• Usage:

  // Read the contents of a file as a string
  contents, err := script.File("test.txt").String()
  
  // Count the number of lines that match a pattern
  numErrors, err := script.File("test.txt").Match("Error").CountLines()
  
  // Filter all the results through some arbitrary Go function
  script.Stdin().Match("Error").FilterLine(strings.ToUpper).Stdout()
  
  
  // Append the first 10 arguments to a file
  script.Args().Concat().Match("Error").First(10).AppendFile("/var/log/errors.txt")
  
  // Simple HTTP request
  script.Get("https://wttr.in/London?format=3").Stdout()
  // Output:
  // London: 🌦   +13°C
  

Go Telemetry

• Context:

  • the Go toolchain can collect usage and breakage statistics that help the Go team understand how the Go toolchain is used and how well it is working.

• Usage:

  go telemetry on
  
  go telemetry off
  
  // revert to the default mode of local-only telemetry
  go telemetry local
  

https://github.com/bitfield/script

https://go.dev/blog/gotelemetry

https://go.dev/doc/telemetry