Go Package os: Difference between revisions

From NovaOrdis Knowledge Base
Jump to navigation Jump to search
Line 26: Line 26:
=TO DEPLETE=
=TO DEPLETE=
<font color=darkkhaki>
<font color=darkkhaki>
==Internal==
* [[Go Concepts - Standard Library#Packages|Standard Library]]
* [[Go Recipes|Recipes]]
* [[Go Signals|Signals in Go]]
==Functions==
==Functions==



Revision as of 18:29, 25 August 2023

External

Internal

Overview

Reading and Writing an Entire File in/from Memory

Read with ReadFile()

To read the content of an entire file into a byte slice:

bs, err := os.ReadFile("/Users/ovidiu/tmp/test.txt")

os.ReadFile() closes the file after use.

Write with WriteFile()

To write in-memory data into a file:

s := "This\nis multi-line\nfile\ncontent\n"
err := os.WriteFile("/Users/ovidiu/tmp/test2.txt", []byte(s), 0777)

os.WriteFile() closes the file after use.

TO DEPLETE

Functions

os.Open()

Works with files and directories.

os.Create()

os.File

os.File Methods

FileInfo

FileInfo Methods

  • Size()

os.Args

os.Args is a string slice that holds the command-line arguments, starting with the program name. For more details on how to use see:

Command Line Parsing