Appendix A Linux Commands & Source Code
The console server platform is a dedicated Linux computer, optimized to provide monitoring and secure
access to serial and network consoles of critical server systems and their supporting power and
networking infrastructure.
Black Box console servers are built on the 2.4 uCLinux kernel as developed by the uCLinux project. This is
GPL code and source can be found at http://cvs.uclinux.org. Some uCLinux commands have config files
that can be altered (e.g. portmanager, inetd, init, ssh/sshd/scp/sshkeygen, ucd-snmpd, samba, fnord,
sslwrap). Other commands you can run and do neat stuff with (e.g. loopback, bash (shell), ftp, hwclock,
iproute, iptables, netcat, ifconfig, mii-tool, netstat, route, ping, portmap, pppd, routed, setserial,
smtpclient, stty, stunel, tcpdump, tftp, tip, traceroute)
Below are most of the standard uCLinux and BusyBox commands (and some custom Black Box
commands) that are in the default build tree. The Administrator can use these to configure the console
server, and monitor and manage attached serial console and host devices:
Add a group or add an user to a group
Manipulate the system ARP cache
Send ARP requests/replies
Swiss army knife of embedded Linux commands
Concatenate FILE(s) and print them to stdout
Useful for interacting with a modem connected to stdin/stdout
Change file access permissions
Change file access permissions
Change file owner and group
config
Black Box tool to manipulate and query the system configuration from the
command line
Copy files and directories
Print or set the system date and time
Delete USER from the system
Report filesystem disk space usage
Dynamic Host Configuration Protocol server
Network utility that listens on the discard port
Print or control the kernel ring buffer
Print the specified ARGs to stdout
Tool for erasing MTD partitions
Tool for erasing entire MTD partitions
_____________________________________________________________________
724-746-5500 | blackbox.com Page 271
