Parameters could be passed to console applications in command line, example:
./MyTool -f /home/user -count 20
In this case parameter flags are: -f, and -count, and parameter values are: /home/user and 20
To apply this in Golang we add “flag” to import and write below code:
func main() {
folder := flag.String("f", "/",
"Folder name that contents the files")
count := flag.Int("count", 10, "Files number to process")
flag.Parse()
fmt.Printf("Selected folder: %s, files count: %d\n",
*folder, *count)
}
Example of usage and output:
./MyTool -f /home -count 20
Selected folder: /home, files count: 20
Calling it with –help:
./MyTool --help
Usage of ./MyTool:
-count int
Files number to process (default 10)
-f string
Folder name that contents the files (default "/")