diff --git a/devtools/README.md b/devtools/README.md
index e415ba6..155f9aa 100644
--- a/devtools/README.md
+++ b/devtools/README.md
@@ -1,4 +1,4 @@
 # Development tools
 ## Files:
-* __fake_java.py__ can be used to get the command used to start Minecraft. When run, it will create a file called `fake_java_out.txt` in its working directory.
+* __harvest_arguments.sh__ can be used to get the command used to start Minecraft. Just rename the Java executable to <name>_backup and put this file in its place. Output files will be created in the running directory. They are named by the current date.
 * __rmpyc__ removes all `.pyc` files in the current working directory and all subdirectories.
diff --git a/devtools/fake_java.py b/devtools/fake_java.py
deleted file mode 100755
index e3b1732..0000000
--- a/devtools/fake_java.py
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/usr/bin/python2
-
-import sys
-
-first_argument=True
-out=open("fake_java_out.txt", "w")
-for element in range(len(sys.argv)):
-    out.write(sys.argv[element])
-    first_argument=False
-    if not first_argument:
-        out.write(" ")
-out.close()
diff --git a/devtools/harvest_arguments.sh b/devtools/harvest_arguments.sh
new file mode 100755
index 0000000..7138ded
--- /dev/null
+++ b/devtools/harvest_arguments.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+NOW=`date`
+echo "Executable:     $0" > "$NOW.log"
+echo "Timestamp:      $NOW" >> "$NOW.log"
+echo -n "Arguments:      " >> "$NOW.log"
+echo "$*" | sed ':a;s/ -/\n             >>>-/;ta' >> "$NOW.log"
+echo "Full command:   $0 $*" >> "$NOW.log"
+BACKUPCMD="`readlink -f \`which $0\``_backup"
+echo "Actual command: $BACKUPCMD $*" >> "$NOW.log"
+echo "$BACKUPCMD $*" | sh