From 8758bb845b063b76b55d2c178d0dc393b2a39c5c Mon Sep 17 00:00:00 2001
From: Andrey Samsonov <andrey.samsonov@gmail.com>
Date: Sat, 2 May 2015 15:34:56 +0400
Subject: Clear that length and position can be set by variable in substring
 extraction

---
 bash.html.markdown | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bash.html.markdown b/bash.html.markdown
index e0c12f97..81f85d28 100644
--- a/bash.html.markdown
+++ b/bash.html.markdown
@@ -59,7 +59,8 @@ echo ${VARIABLE/Some/A}
 # This will substitute the first occurance of "Some" with "A"
 
 # Substring from a variable
-echo ${VARIABLE:0:7}
+LENGTH=7
+echo ${VARIABLE:0:LENGTH}
 # This will return only the first 7 characters of the value
 
 # Default value for variable
-- 
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