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Top Forums Shell Programming and Scripting Commenting lines in a file using SED Post 302399916 by czk on Tuesday 2nd of March 2010 01:28:41 AM
Old 03-02-2010
Wrench

this should do it,

# invoke sed with the -n option to suppress it's normal output
# ie. sed -n -f add_comments input_file > output_file


/^if(top.location != location){$/{
:comment_lines
{
s/^/\\\\/
p
n
/^}$/! b comment_lines
s/^/\\\\/
}
}
p
 

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base64(1)						    BSD General Commands Manual 						 base64(1)

NAME
base64 -- Encode and decode using Base64 representation SYNOPSIS
base64 [-d | -h | -v | -D] [-b count] [-i input_file] [-o output_file] DESCRIPTION
base64 encodes and decodes Base64 data, as specified in RFC 4648. With no options, base64 reads raw data from stdin and writes encoded data as a continuous block to stdout. OPTIONS
The following options are available: -b count --break=count Insert line breaks every count characters. Default is 0, which generates an unbroken stream. -d --debug Print verbose log messages during processing. -D --decode Decode incoming Base64 stream into binary data. -h --help Print usage summary and exit. -i input_file --input=input_file Read input from input_file. Default is stdin; passing - also represents stdin. -o output_file --output=output_file Write output to output_file. Default is stdout; passing - also represents stdout. -v --version Print build version and exit. SEE ALSO
openssl(1), wikipedia page <http://en.wikipedia.org/wiki/Base64>, RFC 4648 <http://tools.ietf.org/html/rfc4648> Mac OS X 10.7 February 8, 2011 Mac OS X 10.7
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