How to add string to file using sed instead of from file

Question

red    
blue    
water    
gray    
white

I want to use

sed '/blue/,/gray/!b;//!d;/blue/r file2' file1

But instead of file2 i want to enter new string directly in command. Can any one show me how to do that.

You mean you want to apply the `sed` operation on a output of a command? Can you explain more? — Inian, Dec 08 '17 at 08:00
@Inian No. I don't want to get new content from `file2` but instead directly put string(new text) in this `sed '/blue/,/gray/!b;//!d;/blue/r file2' file1` I dont know the syntax for that — HardikHarpal, Dec 08 '17 at 08:04

sat · Accepted Answer · 2017-12-08T08:11:22.233

1

You can use this sed:

sed '/blue/,/gray/!b;//!d;/blue/a SOMEDATA' file

From man sed:

a \
  text

Append text, which has each embedded newline preceded by a backslash.

Another example:

$ sed '/blue/,/gray/!b;//!d;/blue/a \
> LINE 1 \
> LINE 2 \
> LINE 3' file

red    
blue    
LINE 1 
LINE 2 
LINE 3
gray    
white

edited Dec 08 '17 at 08:11

answered Dec 08 '17 at 08:06

sat

yes it worked. so, Is it `/a` for append and `/r` for read from file? – HardikHarpal Dec 08 '17 at 08:10

1 Answers1