1 files changed, 2 insertions, 0 deletions

diff --git a/bash.md b/bash.md
index dc12446..e6e2b11 100644
--- a/bash.md
+++ b/bash.md
@@ -30,3 +30,5 @@ Loop over integers
 
 * `-z`: is empty string
 * `-f`: is regular file
+* `$A == $B`: string equality
+* `$A != $B`: string inequality