Tornado

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Setup and Startup
To check whether the .cshrc file is causing booting problems, rename it temporarily
and try booting VxWorks again. If this proves to be the source of the problem, you
may want to set up your .cshrc file to conditionally execute any commands that
generate standard output. For example, commands used to set up interactive C
shells could be grouped at the end of the .cshrc and preceded with the following:
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# skip remaining setup if a non-interactive shell:
if (${?USER} == 0 || ${?prompt} == 0 || ${?TERM} == 0) exit
If noclobber is set in your .cshrc, be sure to un-set or move it to the section that is
executed (as shown above) only if there is an interactive shell.
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Helpful Troubleshooting Tools
In tracking down configuration problems, the following UNIX tools can be helpful:
ping
This command indicates whether packets are reaching a specified destination.
For example, the following indicates this host is successful sending packets to
phobos:
% ping phobos
phobos is alive
ifconfig
This command reports the configuration of a specified network interface (for
example, ie0 or le0 on a Sun system). It should report that the interface is
configured for the appropriate Internet address and that the interface is up.
The following example shows that interface le0, whose address is 137.10.1.3, is
up and running:
% ifconfig -a
le0: flags=63
inet 137.10.1.3 netmask ffffff00 broadcast 137.10.1.0
lo0: flags=49
inet 127.0.0.1 netmask ff000000
arp -a
This command displays the “address resolution protocol” tables that map
Internet addresses to Ethernet addresses. Your target machine is listed if at
least one packet was transferred from your target to your host. The following
example shows saturn’s Internet address (92.0.9.54) and Ethernet address
(8:10:5:3:a5:c).
% arp -a
saturn (92.0.9.54) at 8:10:5:3:a5:c
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