2 System Calls Using Go

The operating system provides a lot of ways for applications to extract information and perform operations. You will look at the different ways to extract system-level information and use both the Go standard library and system files.

• Syscall Package
  The syscall package is the standard library provided by Go that provides function calls that interface with the log-level operating system. The following are some of the functionalities provided by the package:
  • Change directory
  • Duplicate file descriptor
  • Get current working directory
  • ...and many more
  

  package main
  
  import (
  
  "log"
  
  s "syscall" )
  
  func main() {
  
  ...
  
  log.Println("Getpid : ", s.Getpid())
  
  ...
  
  _, err := s.Getcwd(c)
  
  ... }
  
  

• ELF Package

High-Level ELF Format
ELF is a common standard file format for executable files, object code,
shared libraries, and core dumps; it is cross platform.