September Morn Update

Task/Fork/Batch-File/fork.bat

@@ -0,0 +1,49 @@
+@echo off
+
+if "%1" neq "" goto %1 || echo Not a valid subroutine
+
+echo Starting mySubroutine1
+start "" "%~n0" mySubroutine1
+echo.
+
+echo Starting mySubroutine2 6 3
+start "" "%~n0" mySubroutine2 6 3
+echo.
+
+echo Starting mySubroutine3
+start "" "%~n0" mySubroutine3
+echo.
+
+:: We wait here for the subroutines to run, but they are running asynchronously
+timeout /t 1
+
+for /l %%i in (1,1,3) do (
+	for /f "tokens=*" %%j in (output%%i.txt) do (
+		set output%%i=%%j
+		del output%%i.txt
+	)
+)
+echo.
+echo.
+echo Return values
+echo ----------------------------
+echo mySubroutine1: %output1%
+echo mySubroutine2: %output2%
+echo mySubroutine3: %output3%
+
+pause>nul
+exit
+
+:mySubroutine1
+echo This is the result of subroutine1 > output1.txt
+exit
+
+:mySubroutine2
+set /a result=%2+%3
+echo %result% > output2.txt
+exit
+
+:mySubroutine3
+echo mySubroutine1 hasn't been run > output3.txt
+if exist output1.txt echo mySubroutine1 has been run > output3.txt
+exit

Task/Fork/Julia/fork.julia

@@ -0,0 +1,6 @@
+println("Parent running.")
+@async(begin sleep(1); println("This is the child process."); sleep(2); println("Child again.") end)
+sleep(2)
+println("This is the parent process again.")
+sleep(2)
+println("Parent again.")

Task/Fork/Rust/fork-1.rust

@@ -0,0 +1,16 @@
+use nix::unistd::{fork, ForkResult};
+use std::process::id;
+
+fn main() {
+    match fork() {
+        Ok(ForkResult::Parent { child, .. }) => {
+            println!(
+                "This is the original process(pid: {}). New child has pid: {}",
+                id(),
+                child
+            );
+        }
+        Ok(ForkResult::Child) => println!("This is the new process(pid: {}).", id()),
+        Err(_) => println!("Something went wrong."),
+    }
+}

Task/Fork/Rust/fork-2.rust

@@ -0,0 +1,2 @@
+This is the original process(pid: 88637). New child has pid: 88651
+This is the new process(pid: 88651).