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Full Discussion: Shell script to ping multiple servers
Top Forums Shell Programming and Scripting Shell script to ping multiple servers Post 302994029 by fretagi on Friday 17th of March 2017 03:16:15 PM
Old 03-17-2017
this is the output of the script with set -x
Code:
 ./netcheck.sh
+ date
Friday, March 17, 2017 09:10:54 PM CAT
+ cat /var/tmp/servers.list
+ read output
+ ping -c 1 192.168.6.4
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.4 is up'
node 192.168.6.4 is up
+ read output
+ ping -c 1 192.168.6.41
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.41 is up'
node 192.168.6.41 is up
+ read output
+ ping -c 1 192.168.6.24
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.24 is up'
node 192.168.6.24 is up
+ read output
+ ping -c 1 192.168.6.11
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.11 is up'
node 192.168.6.11 is up
+ read output
+ ping -c 1 192.168.6.108
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.108 is up'
node 192.168.6.108 is up
+ read output
+ ping -c 1 192.168.6.26
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.26 is up'
node 192.168.6.26 is up
+ read output
+ ping -c 1 192.168.6.51
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.51 is up'
node 192.168.6.51 is up
+ read output
+ ping -c 1 192.168.5.50
+ '[' 1 -eq 0 ']'
+ echo 'node 192.168.5.50 is down'
+ mailx -s '192.168.5.50 not pinging' xyz@asdf.com -b xyz@gmail.com
+ read output
+ ping -c 1 192.168.6.8
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.8 is up'
node 192.168.6.8 is up
+ read output
+ ping -c 1 192.168.6.9
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.9 is up'
node 192.168.6.9 is up
+ read output
+ ping -c 1 192.168.6.25
Invalid operation mode f
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.25 is up'
node 192.168.6.25 is up
+ read output
+ ping -c 1 192.168.6.26
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.26 is up'
node 192.168.6.26 is up
+ read output
+ ping -c 1 192.168.6.71
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.71 is up'
node 192.168.6.71 is up
+ read output
+ ping -c 1 192.168.6.107
+ '[' 0 -eq 0 ']'
+ echo 'node 192.168.6.107 is up'
node 192.168.6.107 is up
+ read output

 

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LEARN ABOUT FREEBSD

nos-tun

NOS-TUN(8)						    BSD System Manager's Manual 						NOS-TUN(8)

NAME

     nos-tun -- implement ``nos'' or ``ka9q'' style IP over IP tunnel

SYNOPSIS

     nos-tun -t tunnel -s source -d destination -p protocol_number [source] target

DESCRIPTION

     The nos-tun utility is used to establish an nos style tunnel, (also known as ka9q or IP-IP tunnel) using a tun(4) kernel interface.

     Tunnel is the name of the tunnel device /dev/tun0 for example.

     Source and destination are the addresses used on the tunnel device.  If you configure the tunnel against a cisco router, use a netmask of
     ``255.255.255.252'' on the cisco.	This is because the tunnel is a point-to-point interface in the FreeBSD end, a concept cisco does not
     really implement.

     Protocol number sets tunnel mode.	Original KA9Q NOS uses 94 but many people use 4 on the worldwide backbone of ampr.org.

     Target is the address of the remote tunnel device, this must match the source address set on the remote end.

EXAMPLES

     This end, a FreeBSD box on address 192.168.59.34:

	   nos-tun -t /dev/tun0 -s 192.168.61.1 -d 192.168.61.2 192.168.56.45

     Remote cisco on address 192.168.56.45:

	   interface tunnel 0
	   ip address 192.168.61.2 255.255.255.252
	   tunnel mode nos
	   tunnel destination 192.168.59.34
	   tunnel source 192.168.56.45

AUTHORS

     Nickolay N. Dudorov <nnd@itfs.nsk.su> wrote the program, Poul-Henning Kamp <phk@FreeBSD.org> wrote the man-page.  Isao SEKI
     <iseki@gongon.com> added a new flag, IP protocol number.

BUGS

     We do not allow for setting our source address for multihomed machines.

BSD
								  April 11, 1998							       BSD
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