diff --git a/desktop/posix.cpp b/desktop/posix.cpp
index 3393568..2485852 100644
--- a/desktop/posix.cpp
+++ b/desktop/posix.cpp
@@ -165,7 +165,7 @@ long EsPOSIXSystemCall(long n, long a1, long a2, long a3, long a4, long a5, long
 #endif
 
 	if ((uintptr_t) n < sizeof(syscallNames) / sizeof(syscallNames[0])) {
-		EsPrint(":: %z %x %x %x\n", syscallNames[n], a1, a2, a3);
+		// EsPrint(":: %z %x %x %x\n", syscallNames[n], a1, a2, a3);
 	}
 
 	if (!posixMountPointBase) {
diff --git a/ports/port.script b/ports/port.script
index 0d9d973..7dee677 100644
--- a/ports/port.script
+++ b/ports/port.script
@@ -1,4 +1,4 @@
-// TODO Replace the remaining few calls to sed/cp.
+// TODO Replace the remaining few calls to sed.
 
 #import "util/get_source.script" get_source;
 
@@ -485,7 +485,7 @@ void PortHarfBuzz() {
 
 	if !PathExists("root/Applications/POSIX/include/harfbuzz") {
 		assert PathCreateLeadingDirectories("root/Applications/POSIX/include/harfbuzz");
-		assert SystemShellExecute("cp -p bin/harfbuzz/src/*.h root/Applications/POSIX/include/harfbuzz"); // TODO Replace.
+		assert PathCopyFilteredInto("bin/harfbuzz/src", ["*.h"], -1, "root/Applications/POSIX/include/harfbuzz");
 	}
 
 	if !PathExists("bin/harfbuzz/libharfbuzz_%targetName%.a") {
diff --git a/util/script.c b/util/script.c
index 6aa7e0a..40200c9 100644
--- a/util/script.c
+++ b/util/script.c
@@ -551,7 +551,80 @@ char baseModuleSource[] = {
 	"	}"
 	"	return true;"
 	"}"
-					      
+	"bool PathCopyInto(str sourceDirectory, str item, str destinationDirectory) {"
+	"	str sourceItem = sourceDirectory + \"/\"+ item;"
+	"	str destinationItem = destinationDirectory + \"/\"+ item;"
+	"	PathCreateLeadingDirectories(PathGetLeadingDirectories(destinationItem));"
+	"	if PathIsDirectory(sourceItem) {"
+	"		return PathCreateDirectory(destinationItem);"
+	"	} else {"
+	"		return FileCopy(sourceItem, destinationItem);"
+	"	}"
+	"}"
+	"bool PathCopyAllInto(str sourceDirectory, str[] items, str destinationDirectory) {"
+	"	for int i = 0; i < items:len(); i += 1 {"
+	"		if !PathCopyInto(sourceDirectory, items[i], destinationDirectory) { return false; }"
+	"	}"
+	"	return true;"
+	"}"
+	"bool PathCopyFilteredInto(str sourceDirectory, str[] filter, int filterWildcard, str destinationDirectory) {"
+	"	str[] items;"
+	"	assert filter:len() > 0;"
+	"	if filterWildcard != -1 || filter:len() > 1 { items = DirectoryEnumerateChildrenRecursively(sourceDirectory); }"
+	"	else { items = DirectoryEnumerateChildren(sourceDirectory); }"
+	"	for int i = 0; i < items:len(); i += 1 {"
+	"		if PathMatchesFilter(items[i], filter, filterWildcard) {"
+	"			if !PathCopyInto(sourceDirectory, items[i], destinationDirectory) { return false; }"
+	"		}"
+	"	}"
+	"	return true;"
+	"}"
+
+	"bool PathMatchesFilter(str path, str[] filterComponents, int _filterWildcard) {"
+	"	str[] pathComponents = StringSplitByCharacter(path, \"/\", false);"
+	"	int filterWildcard = _filterWildcard;"
+	"	if filterWildcard == -1 { "
+	"		filterWildcard = pathComponents:len(); "
+	"	}"
+	"	if filterComponents:len() > pathComponents:len() { "
+	"		return false; "
+	"	}"
+	"	for int i = 0; i < filterComponents:len(); i += 1 {"
+	"		str filterComponent = filterComponents[i];"
+	"		str pathComponent;"
+	"		int wildcard = filterComponent:len();"
+	"		if i < filterWildcard { "
+	"			pathComponent = pathComponents[i]; "
+	"		} else { "
+	"			pathComponent = pathComponents[pathComponents:len() - filterComponents:len() + i]; "
+	"		}"
+	"		for int j = 0; j < filterComponent:len(); j += 1 { "
+	"			if filterComponent[j] == \"*\" { "
+	"				wildcard = j; "
+	"				if pathComponent:len() < filterComponent:len() - 1 {"
+	"					return false;"
+	"				}"
+	"			} "
+	"		}"
+	"		for int j = 0; j < filterComponent:len(); j += 1 {"
+	"			if j < wildcard {"
+	"				if filterComponent[j] != pathComponent[j] { return false; }"
+	"			} else if j > wildcard {"
+	"				if filterComponent[j] != pathComponent[pathComponent:len() - filterComponent:len() + j] { return false; }"
+	"			}"
+	"		}"
+	"	}"
+	"	return true;"
+	"}"
+	"str PathGetLeadingDirectories(str path) {"
+	"	for int i = path:len() - 1; i >= 0; i -= 1 {"
+	"		if path[i] == \"/\" {"
+	"			return StringSlice(path, 0, i);"
+	"		}"
+	"	}"
+	"	return \"\";"
+	"}"
+
 	// Persistent variables:
 
 	"bool PersistRead(str path) #extcall;"