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Full Discussion: 'for' loop advice needed ....!!
Top Forums Shell Programming and Scripting 'for' loop advice needed ....!! Post 302386309 by ak835 on Tuesday 12th of January 2010 05:32:03 AM
Old 01-12-2010
MySQL 'for' loop advice needed ....!!
Code:
/usr/sbin/ifconfig -a | grep "inet" | grep -v "inet6" | grep -v "127.0.0.1" | 
grep -v "0.0.0.0"|grep -v "192.168.100.2" | awk '{print $2}'

I use above command to get IP addresses on AIX boxes.Values coming here are set to a variable "Host IPs.IP Addresses" in my fingerprinting engine.


Next,i am trying to get interface names associated with these IPs.

So i write

Code:
for INTERFACE in `/usr/sbin/ifconfig -a | nawk '$1 ~ /:$/ && $1 !~ /^lo/ {sub(":$", "", $1); print $1}'`
do
        val=`/usr/sbin/ifconfig $INTERFACE | grep  "@@Host IPs.IP Addresses@@"`
        if [ ! -z $val ]
        then     
        echo $INTERFACE
        fi          
done

Issue:

I have some boxes where i can see duplicate IP addresses ,exactly same.These redundant IPs are causing trouble to above 'for' loop.When my CSV is generated ,i see following rows

Code:
<HOSTNAME>        <IP>   <NETMASK>   <DNS>      2010-01-12      en0et0
<HOSTNAME>        <IP>   <NETMASK>   <DNS>      2010-01-12      en0et0

As you can see ,last column is for interface name.

Since 'en0' and 'et0' are two diffrent interfaces but associated with same IP,above loop is faling.

Kindly advice.

Regards
Abhi
 

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LEARN ABOUT MINIX

zgrep

ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep  options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

                                                                                                                                          ZGREP(1)
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