Add text to specified line

Shell Programming and Scripting
1

Hi All,

I am writing a script in which i need to add text "ABC" at line 14 in file input.txt

Can someone please help me how to do it? Thanks.

Regards,
Tushar

2

What have you tried and what kind of errors did you get?

3

I don't have much idea how file editing can be done within a shell script. I googled for it and came to know some commands like awk and ed can be useful but not sure what would be the exact command for doing this. Thanks.

4

Hello,

Try this.

 
awk '{s=$0; if( NR==14 ){ s=s " ABC" } print s;}' inputfile > outfile

Modify accordingly..

Thanks
Krsnadasa

5

Hi tushar_shah06,

One way using perl (change number 3 with your line number):

$ cat infile
one
two
three
four
five
six
seven
eigth
nine
$ perl -lpe 'substr $_, length , 0, q/ ABC/ if $. == 3' infile
one
two
three ABC
four
five
six
seven
eigth
nine
6 
awk 'NR==14{$0 = $0 "TEXT"}1' file
7

Hi,

Why not this?

sed with option i: - 
 
sed "Lineno i Notes : Paste Here " file.txt