Sed problem , please help! 3

[danhodges99]

Hi,

I need to insert a line into a file underneath an existing line in the file, but am unsure as to the syntax. I'm pretty sure sed can be used though, although any ideas are more than welcome. For example:

File
----
Line 1
Line 2
Line 3
Line 4
Line 6

I need to say: Insert "Line 5" after "Line 4".
Hope this is clear

 

[Ygor]

I don't know about sed, but you can do it via awk.

e.g.
txt="line five"
num=4

awk -v txt="$txt" -v num="$num" '{print $0} NR==num {print txt}' file1 > file2
mv file2 file1

 

[jad]

sed '
/line4/ {
aline5
}' <file>

seems to work.

 

[dickiebird]

Hi Jad - I need something like that too, and copied your example :
sed '
/sampletext/ {
afreshlinetext
}' <infile > outfile

But I've got lots of occurences of 'sampletext' in the file,
but only want to do it once after line 10 - Any more thoughts ?

Dickie Bird (-)))

 

[praywin]

sed '{
10atext to insert
}' inpfile

HTH
Cheers,
Pravin.

 

[jad]

i'd use awk in that situation ...

awk 'output == 1{print &quot;Output Text&quot;; output=2} /line4/ && NR>10 && output<1 {output=1} {print}' <file>

 

[dickiebird]

Thanks Jad and Pravin
Stars to both ! Dickie Bird (-)))

 

[jad]

our pleasure

 

[praywin]

Geee... Thanks.. Thats my first star
Cheers,
Pravin.

 

[danhodges99]

Thanks all of you, I got it sorted now
Dan.