diff --git a/src/cmd/rc/.cvsignore b/src/cmd/rc/.cvsignore
new file mode 100644
index 00000000..abdaeea5
--- /dev/null
+++ b/src/cmd/rc/.cvsignore
@@ -0,0 +1,3 @@
+x.tab.h
+y.tab.c
+y.tab.h
diff --git a/src/cmd/tbl/.cvsignore b/src/cmd/tbl/.cvsignore
new file mode 100644
index 00000000..9483a3fa
--- /dev/null
+++ b/src/cmd/tbl/.cvsignore
@@ -0,0 +1 @@
+o.trbl
diff --git a/src/cmd/troff/.cvsignore b/src/cmd/troff/.cvsignore
new file mode 100644
index 00000000..6b401b18
--- /dev/null
+++ b/src/cmd/troff/.cvsignore
@@ -0,0 +1 @@
+o.troff