adding text to a file between lines

Shell Programming and Scripting
1

Suppose content of my first file:

     first line
     second line
     third line

How can i insert text between "first line" & "second Iline"

Any help?????/

2

Alternative in Python:

#!/usr/bin/python
data = open("file").readlines()
data.insert(1,'inserted line\n')
print ''.join(data)

Output:

first line
inserted line
second line
third line
3 
sed "/first line/i\\
hi buddy\\
how r u ?\\
Gud morning" file

or if you want to add contents from a file use this

sed "/first line/r secondfile" file
4

------------------------------------------
--------------------------------

if i have a file of 1000 lines.....

how can I give set a particular in the sed command....this is ok for a file with few lines...hope u understand the concern.....

5

text deleted..

Sorry.. Understood the requirement wrongly

6

Can you explain with example?

7

Simply:

sed '2i Hello' file

This will return

first line
Hello
second line
third line
8

use ex editor
ex $filename <<!
$n
i
line1
line2
.
:w
!

Thanks
Mark.