notes on ps working dir

get_pid.go

@@ -5,6 +5,34 @@ import (
 	"os/exec"
 )
 
+/*
+  To see the PID, command, and current working directory for all processes, you can run:
+
+   1 ps -eo pid,cmd,cwd
+
+  Explanation
+
+   * -e: Selects every process on the system.
+   * -o pid,cmd,cwd: Specifies a user-defined format.
+       * pid: Shows the Process ID.
+       * cmd: Shows the command with its arguments.
+       * cwd: Shows the current working directory of the process.
+
+  Alternative for a Specific Process (Linux)
+
+  If you already know the PID and just want to find its working directory, there are two even more direct methods on Linux:
+
+   1. Using the `pwdx` command:
+   1     pwdx <PID>
+      This will print only the CWD for that specific process.
+
+   2. Checking the `/proc` filesystem:
+      The CWD is exposed as a symbolic link. You can read it with ls or readlink:
+
+   1     ls -l /proc/<PID>/cwd
+      This will show you where the cwd link points.
+*/
+
 func main() {
 	fmt.Println("Starting a 'sleep 15' command...")