diff --git a/rex.project/x86_64/components/stage4/cleanup.bash b/rex.project/x86_64/components/stage4/cleanup.bash
new file mode 100755
index 0000000..60a6d78
--- /dev/null
+++ b/rex.project/x86_64/components/stage4/cleanup.bash
@@ -0,0 +1,46 @@
+#!/bin/bash
+# desc:
+# stages, builds, installs
+
+# make variables persist in subprocesses for logging function
+set -a
+
+APPNAME="post-stage4-cleanup"
+
+
+# the file to log to
+LOGFILE="${APPNAME}.log"
+
+# ISO 8601 variation
+TIMESTAMP="$(date +%Y-%m-%d_%H:%M:%S)"
+
+# the path where logs are written to
+# note: LOGS_ROOT is sourced from environment
+LOG_DIR="${LOGS_ROOT}/${APPNAME}-${TIMESTAMP}"
+
+
+# print to stdout, print to log
+logprint() {
+	mkdir -p "${LOG_DIR}"
+	echo "[$(date +%Y-%m-%d_%H:%M:%S)] [${APPNAME}] $1" \
+	| tee -a "${LOG_DIR}/${LOGFILE}"
+}
+
+# Tell the user we're alive...
+logprint "Initializing the ${APPNAME} utility..."
+
+logprint "Cleanup of /tmp"
+rm -rf /tmp/*
+assert_zero $?
+
+logprint "Erasing libtool archive files"
+find /usr/lib /usr/libexec -name \*.la -delete
+assert_zero $?
+
+logprint "Deleting temporary toolchain..."
+find /usr -depth -name ${T_TRIPLET}\* | xargs rm -vrf
+assert_zero $?
+
+# TODO better integrate test user lifecycle
+
+logprint "Execution of ${APPNAME} completed."
diff --git a/rex.project/x86_64/plans/master.plan b/rex.project/x86_64/plans/master.plan
index e267ac9..cd270a1 100644
--- a/rex.project/x86_64/plans/master.plan
+++ b/rex.project/x86_64/plans/master.plan
@@ -5,6 +5,7 @@
 			"name":			"welcome master", 
 			"dependencies": [ null ],
 			"comment":		"greet the user"
-		}
+		},
+
 	]
 }
diff --git a/rex.project/x86_64/plans/stage3.plan b/rex.project/x86_64/plans/stage3.plan
index 8ad1b5d..f689c0f 100644
--- a/rex.project/x86_64/plans/stage3.plan
+++ b/rex.project/x86_64/plans/stage3.plan
@@ -17,7 +17,7 @@
 			"comment":		"LFS 11.3-systemd-rc1 Ch. 7.6"
 		},
 		{
-			"name":			"util-linux", 
+			"name":			"util-linux pass 1", 
 			"dependencies": [ null ],
 			"comment":		"LFS 11.3-systemd-rc1 Ch. 7.12"
 		},
diff --git a/rex.project/x86_64/plans/stage4.plan b/rex.project/x86_64/plans/stage4.plan
index b7cd9ef..828a09b 100644
--- a/rex.project/x86_64/plans/stage4.plan
+++ b/rex.project/x86_64/plans/stage4.plan
@@ -377,7 +377,7 @@
 			"comment":		"LFS 11.3-systemd-rc1 Ch. 8.75"
 		},
 		{
-			"name":			"util-linux", 
+			"name":			"util-linux pass 2", 
 			"dependencies": [ null ],
 			"comment":		"LFS 11.3-systemd-rc1 Ch. 8.76"
 		},
@@ -385,6 +385,11 @@
 			"name":			"e2fsprogs", 
 			"dependencies": [ null ],
 			"comment":		"LFS 11.3-systemd-rc1 Ch. 8.77"
+		},
+		{
+			"name":			"stage4 cleanup", 
+			"dependencies": [ null ],
+			"comment":		"8.80"
 		}
 	]
 }
diff --git a/rex.project/x86_64/units/master.units b/rex.project/x86_64/units/master.units
index 1bf1d98..2419f17 100644
--- a/rex.project/x86_64/units/master.units
+++ b/rex.project/x86_64/units/master.units
@@ -17,6 +17,24 @@
 			"group":        			"root",
 			"supply_environment":		true,
 			"environment":  			"environments/stage4.env.bash"
+		},
+		{
+			"name":         			"stage4 cleanup",
+			"target":       			"components/stage4/cleanup.bash",
+			"is_shell_command":			true,
+			"shell_definition":			"bash",
+			"force_pty":				true,
+			"set_working_directory":	false,
+			"working_directory":		"",
+			"rectify":      			false,
+			"rectifier":    			"",
+			"active":       			true,
+			"required":     			true,
+			"set_user_context": 		true,
+			"user":         			"root",
+			"group":        			"root",
+			"supply_environment":		true,
+			"environment":  			"environments/stage4.env.bash"
 		}
 	]
 }
diff --git a/rex.project/x86_64/units/stage3.units b/rex.project/x86_64/units/stage3.units
index 914e6a7..948d788 100644
--- a/rex.project/x86_64/units/stage3.units
+++ b/rex.project/x86_64/units/stage3.units
@@ -145,7 +145,7 @@
         "environment":  			"environments/stage3.env.bash"
     },
     {
-        "name":         			"util-linux",
+        "name":         			"util-linux pass 1",
         "target":       			"components/stage3/util-linux.bash --all",
 		"is_shell_command":			true,
 		"shell_definition":			"bash",
diff --git a/rex.project/x86_64/units/stage4.units b/rex.project/x86_64/units/stage4.units
index cbbf912..1159b27 100644
--- a/rex.project/x86_64/units/stage4.units
+++ b/rex.project/x86_64/units/stage4.units
@@ -1351,7 +1351,7 @@
 		"environment":  			"environments/stage4.env.bash"
 	},
 	{
-		"name":         			"util-linux",
+		"name":         			"util-linux pass 2",
 		"target":       			"components/stage4/util-linux.bash --all",
 		"is_shell_command":			true,
 		"shell_definition":			"bash",
@@ -1385,6 +1385,24 @@
 		"group":        			"root",
 		"supply_environment":		true,
 		"environment":  			"environments/stage4.env.bash"
+	},
+	{
+		"name":         			"stage4 cleanup",
+		"target":       			"components/stage4/cleanup.bash",
+		"is_shell_command":			true,
+		"shell_definition":			"bash",
+		"force_pty":				true,
+		"set_working_directory":	false,
+		"working_directory":		"",
+		"rectify":      			false,
+		"rectifier":    			"",
+		"active":       			true,
+		"required":     			true,
+		"set_user_context": 		true,
+		"user":         			"root",
+		"group":        			"root",
+		"supply_environment":		true,
+		"environment":  			"environments/stage4.env.bash"
 	}
   ]
 }