diff --git a/help/linux/bash/script/case.md b/help/linux/bash/script/case.md
new file mode 100644
index 0000000..dbeb0a0
--- /dev/null
+++ b/help/linux/bash/script/case.md
@@ -0,0 +1,23 @@
+# Bash case switch.
+
+Example:
+```bash
+case EXPRESSION in
+
+  PATTERN_1)
+    STATEMENTS
+    ;;
+
+  PATTERN_2)
+    STATEMENTS
+    ;;
+
+  PATTERN_N)
+    STATEMENTS
+    ;;
+
+  *)
+    STATEMENTS
+    ;;
+esac
+```