From 8b0940895b723a1eeba097fecb11eb42d33ddd22 Mon Sep 17 00:00:00 2001
From: onceupon <nim.1111.ou@gmail.com>
Date: Wed, 10 May 2017 19:22:41 +0800
Subject: [PATCH] edit awk

print line number and number of characters on each line
---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f07d487..89a95be 100644
--- a/README.md
+++ b/README.md
@@ -340,10 +340,10 @@ a=bbo;b=obb;
 awk -v a="$a" -v b="$b" "$1==a && $10=b' filename 
 ```
 
-##### print number of characters on each line
+##### print line number and number of characters on each line
     
 ```bash
-awk '{print length ($0);}' filename 
+awk '{print NR,length($0);}' filename 
 ```
 
 ##### find number of columns