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Appendix A: Linux Commands and Source Code
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sleep * Delay for a specified amount of time
smbmnt Helper utility for mounting SMB file systems
smbmount Mount an SMBFS file system
smbumount SMBFS umount for normal users
snmpd SNMP daemon
snmptrap Sends an SNMP notification to a manager
sredird RFC 2217 compliant serial port redirector
ssh OpenSSH SSH client (remote login program)
ssh-keygen Authentication key generation, management, and conversion
sshd OpenSSH SSH daemon
sslwrap Program that allows plain services to be accessed via SSL
stty Change and print terminal line settings
stunnel Universal SSL tunnel
sync * Flush file system buffers
sysctl Configure kernel parameters at runtime
syslogd System logging utility
tar * The tar archiving utility
tc Show traffic control settings
tcpdump Dump traffic on a network
telnetd Telnet protocol server
tftp Client to transfer a file from/to tftp server
tftpd Trivial file Transfer Protocol (tftp) server
tip Simple terminal emulator/cu program for connecting to modems and serial devices
top Provide a view of process activity in real time
touch * Change file timestamps
traceroute Print the route packets take to network host
traceroute6 Traceroute for IPv6
true * Returns an exit code of TRUE (0)
umount * Unmount file systems
uname * Print system information
usleep * Delay for a specified amount of time
vconfig * Create and remove virtual ethernet devices
vi * Busybox clone of the VI text editor
w Show who is logged on and what they are doing
zcat * Identical to gunzip -c
Commands above which are appended with '*' come from BusyBox (the Swiss Army Knife of embedded Linux)
%''"""&!$#& '"'!$#& . Others are generic Linux commands and most commands the -h or --h e lp argument
to provide a terse runtime description of their behavior. More details on the generic Linux commands can found online at
%''& &''('" & and %''"""&&''!#(' ((
(&
An updated list of the commands may found using ls command to view all the commands actually available in the /bin directory in your console
server.
There were a number of Black Box tools listed above that make it simple to configure the console server and make sure the changes are stored in
the console server's flash memory, etc. These commands are covered in the previous chapters and include:
config which allows manipulation and querying of the system configuration from the command line. With config a new configuration can be
activated by running the relevant configurator, which performs the action necessary to make the configuration changes live.
portmanager which provides a buffered interface to each serial port. It is supported by the pmchat and pmshell commands which ensure all serial
port access is directed via the portmanager.
pmpower is a configurable tool for manipulating remote power devices that are serially or network connected to the console server.
SDT Connector is a java client applet that provides point-and-click SSH tunneled connections to the console server and Managed Devices.