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Top Forums Shell Programming and Scripting bash script to test network connection - please help Post 302354943 by chebarbudo on Monday 21st of September 2009 03:25:10 AM
Old 09-21-2009
Hey Shadow Boi,

You should use lower case w (deadline) instead of upper case W (timeout).
I'm doing the same check with a set of 40 machines and it never last more than 40 seconds (in the worst case).

Hope this helps
Santiago
 

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

NAME
vde_tunctl -- create and manage persistent TUN/TAP interfaces SYNOPSIS
vde_tunctl [-f tun-clone-device] [-u owner] [-t device-name] vde_tunctl [-f tun-clone-device] -d device-name DESCRIPTION
vde_tunctl allows the host sysadmin to preconfigure a TUN/TAP device for use by a particular user. That user may open and use the device, but may not change any aspects of the host side of the interface. vde_tunctl is a simple copy of tunctl done for practical purposes. USAGE
To create an interface for use by a particular user, invoke tunctl without the -d option: # vde_tunctl -u someuser Set 'tap0' persistent and owned by uid 500 Then, configure the interface as normal: # ifconfig tap0 192.168.0.254 up # route add -host 192.168.0.253 dev tap0 # bash -c 'echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp' # arp -Ds 192.168.0.253 eth0 pub To delete the interface, use the -d option: # vde_tunctl -d tap0 Set 'tap0' nonpersistent SEE ALSO
vde_switch(1) vde_plug2tap(1) AUTHOR
tunctl was written by Jeff Dike jdike@karaya.com This manual page is based on tunctl manual page written by Matt Zimmerman mdz@debian.org for the Debian GNU/Linux system. VDE_TUNCTL(8)
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