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Full Discussion: script to get all ip addresses of servers into a file
Top Forums Shell Programming and Scripting script to get all ip addresses of servers into a file Post 302434008 by funksen on Thursday 1st of July 2010 05:42:23 AM
Old 07-01-2010
that's how I would do it in bash/ksh93, don't know about tcsh, but perhaps you can modify it

it's doing the pings parallel, so you just have to wait a few secs

Code:
for (( i=1 ; i<255 ; i++ ))
do ping -c 1 -w 1 xxx.xxx.xxx.${i} 2>&1 > /dev/null && echo "xxx.xxx.xxx.${i} ping ok" >> logfile.txt &
done

Last edited by funksen; 07-01-2010 at 10:14 AM..
 

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LEARN ABOUT LINUX

service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working
       directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script,  service  passes  COMMAND and OPTIONS it to the init script unmodified.  All scripts should support at least the start and
       stop commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the  start
       command.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

       /etc/init.d
	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)
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