Insert multiple lines 3 lines before string 3

[dodge20]

I would like to insert the lines

printf("%s",RETURN)
LINE_COUNT = LINE COUNT + LINE_INC

3 lines before the string (also inserting the blank lines above and below)

function wrln(ln){

I have tried using awk and sed but I keep getting sytax errors, and I really don't think I am very close.

Dodge20

 

[PHV]

I have tried using awk and sed but I keep getting sytax errors
Why not posting what you've tried so far ?

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[dodge20]

Because it is kind of embarrassing.

awk '/function wrln(ln)\{/{print "printf("%s",RETURN)"}3' iastunspd.aster > test.txt

sed '/function wrln(ln)/iprintf("%s",RETURN)' iastunspd.aster > test.txt

I haven't even tried multiple lines, I was just trying to get something to work, but no luck.

Dodge20

 

[PHV]

A starting point:
awk '
/function wrln(ln)\{/{r=NR-3}
NR==FNR{next}
FNR==r{
print "\nprintf(\"%s\",RETURN)\nLINE_COUNT = LINE COUNT + LINE_INC\n"
}
{print}
' iastunspd.aster iastunspd.aster > test.txt

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[dodge20]

What do I need to do to make it actually print something?

Dodge20

 

[PHV]

Doesn't test.txt contain what you wanted ?

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[dodge20]

No, it is just an exact copy of iastunspd.aster

Dodge20

 

[PHV]

Does iastunspd.aster really have a line (with line# > 3) containing "function wrln(ln){" ?

Hope This Helps, PH.
FAQ219-2884
FAQ181-2886

 

[dodge20]

Yes it does. I even deleted all the text and made a file that contains only function wrln(ln){
on line 5.

function wrln(ln){

The permissions are -rwxrwxrwx

Dodge20

 

[feherke]

Hi

PHV, you just copied Dodge20's code... In [tt]awk[/tt] the parenthesis ( () ) are escaped, the braces ( {} ) by default not.

/function wrln[red]\[/red](ln[red]\[/red]){/{r=NR-3}

Feherke.

http://rootshell.be/~feherke/

 

[PHV]

Good catch Feherke, thanks.

 

[dodge20]

That looks like that was the problem. Thanks a bunch.

Dodge20