Linux and Unix Shell Programming

10.6. Writing to a file within sed

As well as using the ‘>’ file redirection to send output to a file, you can send the results from a sed command to a file. The format for this is a little like the write using substitutes. Here’s the format:

[ address[,address]] w filename 

where ‘w’ lets sed know it’s going to write the results to a file, and ‘filename’ is the filename is self-explanatory. It’s straightforward; here are a couple of examples.

						$ sed '1,2 w filedt' quote.txt
					

Here the file is sent to the screen, and the pattern range, which is lines 1 and 2, is sent to the file called filedt.

						$ pg filedt 
The honeysuckle band played all night long for only $90. 
It was an evening of splendid music and company.
					

In this example we search for the ...