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Can i see wich Computers are up in my network with a script

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Top Forums Shell Programming and Scripting Can i see wich Computers are up in my network with a script
# 1  
Old 05-20-2015
Tools Can i see wich Computers are up in my network with a script
Code:
#!/bin/bash

for ((n=0 ; n < 254 ; n+=1))
do
    ip=192.168.0.$n
    if ping -c 1 -w 1 $ip > /dev/null 2> /dev/null >> /etc/logping.txt; then  
        echo "${ip} is up" # output up
        # sintax >> /etc/logping.txt log with .txt format
    else
        echo "${ip} is down" # output down
    fi
done

This is code that I already have when i run the script ./testping.sh 220
than i gave this out put
Code:
192.168.0.0 is down
192.168.0.1 is up
192.168.....
...
.
.
.
.
192.168.0.220

Now I want to limit the output to two lines but it doesn't work

I want to also implement 2 arguments to this script
the argument xx-yy en -t
xx-yy a range of IP address when I give the parameter ./testping.sh 67-80 it scans the range between this IP addresses

-t counts the IP address with 200 for example, when I run the script with the parameter -t, ./testping.sh -t 17, then I want as output 192.168.0.217
Last edited by Don Cragun; 05-21-2015 at 02:36 PM.. Reason: Added another ICODE tag set.
# 2  
Old 05-20-2015
I think that this is what you want;

Code:
#!/bin/bash

for ((n = ${1} ; n < ${2} ; n+=1))
do
    ip=192.168.1.$n
    if ping -c 1 -w 1 ${ip} > /dev/null 2> /dev/null >> /etc/logping.txt; then  
        echo "${ip} is up" # output up
        # sintax >> /etc/logping.txt log with .txt format
    else
        echo "${ip} is down" # output down
    fi
done

To run the script do as follows;

Code:
[root@ekbit13 bin]# ./testping.sh 10 20
192.168.1.10 is down
192.168.1.11 is down
192.168.1.12 is up
192.168.1.13 is down
192.168.1.14 is down
192.168.1.15 is down
192.168.1.16 is down
192.168.1.17 is down
192.168.1.18 is up
192.168.1.19 is down
[root@ekbit13 bin]#

The range is dependent on the two numbers that you provide after the script name, so for example;

Code:
[root@ekbit13 bin]# ./testping.sh 1 20
192.168.1.1 is up
192.168.1.2 is down
192.168.1.3 is down
192.168.1.4 is down
192.168.1.5 is down
192.168.1.6 is down
192.168.1.7 is down
192.168.1.8 is down
192.168.1.9 is down
192.168.1.10 is down
192.168.1.11 is down
192.168.1.12 is up
192.168.1.13 is down
192.168.1.14 is down
192.168.1.15 is down
192.168.1.16 is down
192.168.1.17 is down
192.168.1.18 is up
192.168.1.19 is down
[root@ekbit13 bin]#

Will ping from 1 to 20, as to adding switches as in your request for a "-t" which increments the IP address by 200 - you'll need to specify if it's output that you want changed or the actual address that is pinged.

Of course you could just use something like Xymon or Nagios and have it monitored all the time and automatically.

Regards

Gull
Last edited by gull04; 05-20-2015 at 04:44 PM.. Reason: Incomplete info
# 3  
Old 05-20-2015
Any specific reason the other 2 scripts in that other thread (Problems with past arguments in script) dont work / suffice?
Incl a third thread.
Last edited by sea; 05-21-2015 at 07:44 AM..
This User Gave Thanks to sea For This Post:
rbatte1
# 4  
Old 05-21-2015
Hi Folks,

Sorry about this, I didn't realise that this had already been done to death.

Regards

Gull
# 5  
Old 05-21-2015
Quote:
Originally Posted by Roggy
Code:
#!/bin/bash

for ((n=0 ; n < 254 ; n+=1))
do
    ip=192.168.0.$n
    if ping -c 1 -w 1 $ip > /dev/null 2> /dev/null >> /etc/logping.txt; then  
        echo "${ip} is up" # output up
        # sintax >> /etc/logping.txt log with .txt format
    else
        echo "${ip} is down" # output down
    fi
done

This is code that I already have when i run the script ./testping.sh 220
than i gave this out put
Code:
192.168.0.0 is down
192.168.0.1 is up
192.168.....
...
.
.
.
.
192.168.0.220

NO, it does not! That code doesn't look at any command line arguments and always prints ping results for IP addresses 192.168.0.0 through 192.168.0.254.
Quote:
Originally Posted by Roggy

Now I want to limit the output to two lines but it doesn't work
Huh?
What two lines of output do you want to get from asking for the status of IPE address 192.168.0.220?
Quote:
Originally Posted by Roggy

I want to also implement 2 arguments to this script
the argument xx-yy en -t
xx-yy a range of IP address when I give the parameter ./testping.sh 67-80 it scans the range between this IP addresses

-t counts the IP address with 200 for example, when I run the script with the parameter -t, ./testping.sh -t 17, then I want as output 192.168.0.217
Why do you keeping asking the same question? Doesn't the code I provided in post #5 in your previous thread do exactly this?
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