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Full Discussion: How to read file, and replace certain string with another string?
Top Forums Shell Programming and Scripting How to read file, and replace certain string with another string? Post 302927766 by Corona688 on Friday 5th of December 2014 10:12:21 AM
Old 12-05-2014
My original solution, from your original thread, still does exactly what you say you want. Did you ever try it?

Code:
#!/bin/bash

while IFS="/" read IP S
do
        M=$(( 0xffffffff ^ ((1 << (32-S)) -1) ))
        echo "$IP netmask $(( (M>>24) & 0xff )).$(( (M>>16) & 0xff )).$(( (M>>8) & 0xff )).$(( M & 0xff ))"
done < infile > outfile

This User Gave Thanks to Corona688 For This Post:
type8code0
 

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LEARN ABOUT FREEBSD

ctfconvert

CTFCONVERT(1)						    BSD General Commands Manual 					     CTFCONVERT(1)

NAME

     ctfconvert -- convert debug data to CTF data

SYNOPSIS

     ctfconvert [-gis] -l label -L labelenv [-o outfile] object_file

DESCRIPTION

     The ctfconvert utility converts debug information from a binary file to CTF data and replaces the debug section of that file with a CTF sec-
     tion called SUNW_ctf.  This new section is added to the input file, unless the -o option is present.  You can also opt to keep the original
     debugging section with the -g option.

     The following options are available:

     -l label
	     Sets the label as label.

     -L labelenv
	     Instructs ctfconvert to read the label from the environment variable labelenv.

     -g      Don't delete the original debugging section.

     -i      Ignore object files built from other languages than C.

     -s      Use the .dynsym ELF section instead of the .symtab ELF section.

     -o outfile
	     Write the output to file in outfile.

EXIT STATUS

     The ctfconvert utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     ctfdump(1), ctfmerge(1)

HISTORY

     The ctfconvert utility first appeared in FreeBSD 7.0.

AUTHORS

     The CTF utilities came from OpenSolaris.

BSD
								   July 7, 2010 							       BSD
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