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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 302927792 by RudiC on Friday 5th of December 2014 01:29:27 PM
Old 12-05-2014
To remove the /nn, replace printf "%s/%s" $A $B by printf "%s" $A
For the reverse operation, try
Code:
while IFS="     ." read -a VAL
          do N=0
             DL=( . . . / )
             for ((J=0;J<=3;J++))
                  do printf "%d%s" ${VAL[J]} "${DL[J]}"
                     for ((I=7;I>=0;I--))
                          do N=$(( N + (VAL[J+4]>>I)%2 ))
                          done
                  done
             printf "%d\n" $N
          done < file
10.0.0.0/8
10.0.0.0/10
172.16.1.0/16
172.16.1.0/17
172.16.1.0/18
172.16.1.0/19
192.168.1.0/24
192.168.1.0/32

This User Gave Thanks to RudiC For This Post:
type8code0
 

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LEARN ABOUT OPENDARWIN

nigrep

NIGREP(1)						      General Commands Manual							 NIGREP(1)

NAME

       nigrep - search for a regular expression in the NetInfo hierarchy

SYNOPSIS

       nigrep expression [ -t ] domain [ directory ... ]

DESCRIPTION

       nigrep  searches  through the specified domain argument for a regular expression.  It searches the domain's directory hierarchy depth-first
       starting from the root directory. It can also start from each directory specified on the command line.

       The domain argument can be specified as an absolute or relative domain name. The domain argument can be specified as a network  address	or
       hostname and tag if preceded by the -t option.

       On  output,  nigrep  prints the directory ID number of the directory which contains the regular expression, and the property key and values
       where it was found.  A line is printed for each property that contains the regular expression.

OPTIONS

       -t     Specify domain as a network address or hostname and tag.

EXAMPLES

       % nigrep '[Nn]et' /

       % nigrep '[Nn]et' -t 192.42.172.17/local

       % nigrep '192.[0-9]+.172' -t astra/network /machines

       % nigrep '/Net/server.*/Users' .. /users /mounts

SEE ALSO

       netinfo(5)

AUTHOR

       Marc Majka, Apple Computer Inc.

Apple Computer, Inc.						  August 9, 1994							 NIGREP(1)
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