Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: IP Ping Sweep
Top Forums Shell Programming and Scripting IP Ping Sweep Post 302902863 by sudo on Thursday 22nd of May 2014 01:42:11 PM
Old 05-22-2014
Quote:
Originally Posted by Chubler_XL
How about this for your quadrants prompt:

Code:
function get_three_quad
{
   REPLY=""
   while [ -z "$REPLY" ]
   do
      printf "$1"
      read
      if [ "${REPLY//[0-9]/}" != ".." ]
      then
         echo "Illegal input"
         REPLY=""
      fi
    done
}

get_three_quad "
Enter first three quadrants of router address (must contain three periods)
Example- xx.xxx.xx. : "
echo "You entered: $REPLY"

---------- Post updated at 02:13 PM ---------- Previous update was at 02:09 PM ----------

Or if your happy to use grep to validate, and your grep supports Extended REs (-E option).
You could replace the if with the following for full validation:

Code:
if ! echo "$REPLY" | grep -qE "^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(\.|$)){3}$"

For a single value 1-255 you have a number of choices but I like:

Code:
[ $REPLY -gt 0 -a $REPLY -lt 256 ] 2>/dev/null && return
echo "Illegal input"
REPLY=""

That function is great. I see the value defined by the user can can called by using $REPLY later on in the script. Is there a way I can create another variable?

The reason I ask, I want to build that function for all 3 user input fields- so $REPLY does't work for my variable. I need specific names such as PT1ADD, PT2ADD, and PT3ADD.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

ping -t

I need a script that recieves an IP adress and a number of seconds as arguments. and display a massage if the IP replies or not. (8 Replies)
Discussion started by: jaber87
8 Replies

2. UNIX for Dummies Questions & Answers

Ping

Hi , I have one system installed on Linux Red Hat 3.0. I have ip of system 3.156.168.*** and i want to ping some port that is on this IP which command i can do this? sam70 (1 Reply)
Discussion started by: sam70
1 Replies

3. Linux

Not able to ping

Hi All, Need your help one more time. I am trying to ping a linux machine which is not responding to ping. However traceroute can reach the machine and I can log in to it by ssh. I have checked /proc/sys/net/ipv4/icmp_echo_ignore_all it is already set as "0". It is not happening in the... (1 Reply)
Discussion started by: ailnilanjan
1 Replies

4. IP Networking

Can't Ping

I have an old MP-Ras Unix system. I have setup netowkring but am unable to ping any local network pcs or the default gateway. If i use the arp -a command I receive the correct mac address for all connected pcs but I cannot ping anything except the local address. Any help would be appreciative. ... (7 Replies)
Discussion started by: Rutgerncas
7 Replies

5. Shell Programming and Scripting

Animation Ping on Solaris Like Cisco Ping

Hi, I develop simple animation ping script on Solaris Platform. It is like Cisco ping. Examples and source code are below. bash-3.00$ gokcell 152.155.180.8 30 Sending 30 Ping Packets to 152.155.180.8 !!!!!!!!!!!!!.!!!!!!!!!!!!!!!. % 93.33 success... % 6.66 packet loss...... (1 Reply)
Discussion started by: gokcell
1 Replies

6. IP Networking

PING

I am unable to ping my remote server.My server is unable to ping the same. both are able to ping the gateway. both the ip's are on same network.i use a proxy tunnel on my remote server.Help if any clues. (6 Replies)
Discussion started by: oslbhavana
6 Replies

7. UNIX for Dummies Questions & Answers

Where is PING ?

SHAME, that's all that I'm felling right now, however I'm not finding PING or either tracert in my box (Solaris 10). 1) Yes my PATH does have /usr/bin /usr/sbin # echo $PATH /opt/csw:/usr/bin:/sbin:/usr/sbin:/usr/ccs/bin:/usr/sfw/bin:/opt/csw/bin:/opt/csw/gcc2/bin:/opt/csw/bin 2) If I... (1 Reply)
Discussion started by: pxb368@motorola
1 Replies

8. Shell Programming and Scripting

How to get reason for ping failure using perls Net::Ping->new("icmp");?

Hi I am using perl to ping a list of nodes - with script below : $p = Net::Ping->new("icmp"); if ($p->ping($host,1)){ print "$host is alive.\n"; } else { print "$host is unreacheable.\n"; } $p->close();... (4 Replies)
Discussion started by: tavanagh
4 Replies

9. OS X (Apple)

A Bash Audio Sweep Generator...

This is a small program as a tester for a basic sweep generator for bandwidth testing of AudioScope.sh. This DEMO is only capable of 4KHz down to about 85Hz and back due to the low bit rate, but it is proof of concept for a much wider variant using a much higher bit rate. The file generated... (4 Replies)
Discussion started by: wisecracker
4 Replies

10. Programming

Ping test sends mail when ping fails

help with bash script! im am working on this script to make sure my server will stay online, so i made this script.. HOSTS="192.168.138.155" COUNT=4 pingtest(){ for myhost in "$@" do ping -c "$COUNT" "$myhost" &&return 1 done return 0 } if pingtest $HOSTS #100% failed... (4 Replies)
Discussion started by: mort3924
4 Replies

LEARN ABOUT OPENSOLARIS

defaultrouter

defaultrouter(4)						   File Formats 						  defaultrouter(4)

NAME

       defaultrouter - configuration file for default router(s)

SYNOPSIS

       /etc/defaultrouter

DESCRIPTION

       The /etc/defaultrouter file specifies a IPv4 host's default router(s).

       The format of the file is as follows:

	 IP_address
	 ...

       The  /etc/defaultrouter	file can contain the IP addresses or hostnames of one or more default routers, with each entry on its own line. If
       you use hostnames, each hostname must also be listed in the local /etc/hosts file, because no name services are running at  the	time  that
       defaultrouter is read.

       Lines beginning with the ``#'' character are treated as comments.

       The  default  routes  listed  in this file replace those added by the kernel during diskless booting. An empty /etc/defaultrouter file will
       cause the default route added by the kernel to be deleted.

       Use of a default route, whether received from a DHCP server or from /etc/defaultrouter, prevents a machine from acting as an  IPv4  router.
       You can use routeadm(1M) to override this behavior.

FILES

       /etc/defaultrouter    Configuration file containing the hostnames or IP addresses of one or more default routers.

SEE ALSO

       in.rdisc(1M), in.routed(1M), routeadm(1M), hosts(4)

SunOS 5.11							    17 Aug 2004 						  defaultrouter(4)
All times are GMT -4. The time now is 04:07 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy