package main
import (
"crypto/aes"
"crypto/sha256"
"database/sql"
"net/http"
"os"
"os/exec"
)
func main() {
// Filesystem operations
os.WriteFile("test.txt", []byte("hello"), 0o644)
os.ReadFile("test.txt")
os.Remove("test.txt")
os.Mkdir("testdir", 0o755)
// Network operations
http.Get("https://example.com")
http.ListenAndServe(":8080", nil)
// Environment operations
os.Getenv("HOME")
os.Setenv("TEST", "value")
// Process operations
cmd := exec.Command("ls", "-la")
cmd.Run()
os.Getpid()
// Cryptographic operations
sha256.Sum256([]byte("data"))
aes.NewCipher([]byte("key"))
// Database operations
sql.Open("postgres", "connection-string")
}
