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sed.. Add new line after finding text

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# 1  
Old 11-30-2004
sed.. Add new line after finding text
I know that this my be really simple, but I'm having a hard time accomplishing it. I am trying to add a new line of text after finding a particular string of text in a file. Here's what I'm getting:
Code:
sed: command garbled: N/search_string/\\new_text/

I was using "N" to add a line after the text. TIA.
# 2  
Old 11-30-2004
try this ...


sed '/patternstring/ i\
new line string' file1


Please see a new line in the command between i\ and new string.
# 3  
Old 11-30-2004
You could also use awk, which I find gives you a bit more control than sed in these situations
Code:
awk '{ if ( $0 ~ /searchstring/ ) {
          printf( "%s\n%s\n", "Some new inserted text here", $0 );
	  # could use the following to append
	  # printf( "%s\n%s\n", $0, "Some new appended text here" );
     } else {
          print $0;
     }
}' my_input_file

Cheers
ZB
# 4  
Old 12-01-2004
Thank you, that worked like a charm. However, I just used a\ instead of i\ to insert the line after the search string.

sed '/patternstring/ a\
new line string' file1
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