Go Chapter 6.
Files and I/O

Checking if a directory exists

In Go, the os package provides functionalities for interacting with the operating system, including checking if a directory exists.

Creating a temporary file

In Go, the ioutil package originally provided utilities for temporary file creation.

Reading a text file

Reading a text file in Go can be accomplished in several ways, but one of the most straightforward methods is using the ioutil package.

Reading command line arguments

Go provides direct access to command-line arguments through the os package, specifically using os.Args, an array of strings.

In Go, writing to a text file is handled by the os and io/ioutil (for Go versions <1.16) or os and io plus os packages for Go 1.16 and above, demonstrating Go’s philosophy of simplicity and efficiency.

Writing to standard error

In Go, the os package provides the Stderr value, representing the standard error file.

Go Chapter 6.Files and I/O

Go Chapter 6.
Files and I/O