import the os package in go

To import the os package in Golang, you simply need to add the following import statement at the beginning of your file:

main.go
import "os"
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From there, you can use any of the functions and variables provided by the os package to interact with the operating system. For example, the os.Getenv() function can be used to retrieve the value of an environment variable:

main.go
port := os.Getenv("PORT")
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Or, you can use the os.Mkdir() function to create a new directory:

main.go
err := os.Mkdir("new_directory", 0755)
if err != nil {
    log.Fatal(err)
}
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In summary, importing the os package in Golang is easy and allows you to access system-level functionality from your code.