1 files changed, 5 insertions, 0 deletions
diff --git a/bash.md b/bash.md
index e6e54f3..dc12446 100644
--- a/bash.md
+++ b/bash.md
@@ -22,6 +22,11 @@ Loop over files
 
     for file in glob/*; do something $file; done
 
+Loop over integers
+
+    for i in `seq 10`; do echo $i; done
+
 ## Conditionals
 
 * `-z`: is empty string
+* `-f`: is regular file