examples: Process examples (#8598)

examples/process/execve.v

@@ -0,0 +1,21 @@
+module main
+
+import os
+
+fn exec(args []string) {
+	mut out := ''
+	mut line := ''
+	mut line_err := ''
+
+	os.execve('/bin/bash', args, []) or {
+		// eprintln(err)
+		panic(err)
+	}
+}
+
+fn main() {
+	// exec(["-c","find /"]) //works
+	exec(['-c', 'find /tmp/']) // here it works as well
+
+	// exec(["-c","find","/tmp/"])  // does not work I guess is normal
+}