Re: Insert character x at...

On Thursday, May 16, 2013, Tim Chase wrote:

> On 2013-05-14 21:17, blackmuerte wrote:
> > For every line in input file that begins with '0530' (in first 4
> > characters on line), insert 'x' at position/column 32 on same line,
> > then output the whole file to a newfile.
>
> For the original request:
>
>   sed '/^0530/s/\(.\{31\}/\1x/' input.txt
>

One alternative to insert a char after a column N is to use the numeric
flag in the s command.

 $ echo 123456789 | sed 's/./&x/5'
12345x6789

Substitute any char (.) by itself (&) and an x. But only in the 5th
occurrence.




-- 
Aurelio | www.aurelio.net | @oreio


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