Filesystem

Packages

• path/filepath &#151 filepath functions
• os &#151 main os functions
• flag &#151 used to get passed flags/parameters/arguments

How to collect passed flags/parameters/arguments to the GO program

1. import the flag Package ie. import "flag"
2. use the flag.Arg function to get the non-flag arguments in the form of a string ie. firstArgument := flag.Arg(0)
3. use the flag.Parse() to flags (have a dash) like: -d
   • this sets the flags to their non-default values
   • flag.Bool &#151 sets a boolean flag
   • flag.String &#151 sets a string flag
   • take three arguments: name of the flag, default value for the flag, and a help message or error message that will print if flag errors. var b = flag.Bool("b", false, "some help string") var myString = flag.String("my string", " default my string", "some help string for myString")