post(sed): fix command positions

content/post/2020/2020-02-14-sed.md

@@ -5,7 +5,7 @@ imageUrl: "https://images.pexels.com/photos/207580/pexels-photo-207580.jpeg?auto
 tags: ["terminal"]
 categories: ["post"]
 comment: true
-toc: false
+toc: true
 autoCollapseToc: false
 contentCopyright: false
 ---
@@ -41,6 +41,9 @@ sed '/foobar/!s/pattern/replacement/g'
 
 # if you want to edit files in place, add the flag "-i"
 sed -i 's/pattern/replacement/g' filename.txt
+
+# replace commas with newlines (use \r, not \n)
+sed 's/,/\r/g'
 ```
 
 ## Selective deletion
@@ -63,12 +66,6 @@ sed '1,10d'
 
 # delete ALL blank lines
 sed '/^$/d'
-
-# replace commas with newlines (use \r, not \n)
-sed 's/,/\r/g'
-
-# insert 2 blank spaces at beginning of each line
-sed 's/^/  /'
 ```
 
 ## Print
@@ -108,5 +105,8 @@ sed '/pattern/i foobar'
 sed '2a foobar'
 # prepend "foobar" before 2nd line
 sed '2i foobar'
+
+# insert 2 blank spaces at beginning of each line
+sed 's/^/  /'
 ```