Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #887
Difficulty: Easy
sed (stream editor) is a Unix utility that parses and transforms text, using a simple, compact programming language.
True or False?
Linux & Unix Commands - Search Man Pages

ifenslave(8) [centos man page]

IFENSLAVE(8)						    BSD System Manager's Manual 					      IFENSLAVE(8)

NAME
ifenslave -- Attach and detach slave network devices to a bonding device. SYNOPSIS
ifenslave [-acdfhuvV] [--all-interfaces] [--change-active] [--detach] [--force] [--help] [--usage] [--verbose] [--version] master slave ... DESCRIPTION
ifenslave is a tool to attach and detach slave network devices to a bonding device. A bonding device will act like a normal Ethernet network device to the kernel, but will send out the packets via the slave devices using a simple round-robin scheduler. This allows for simple load- balancing, identical to "channel bonding" or "trunking" techniques used in switches. The kernel must have support for bonding devices for ifenslave to be useful. OPTIONS
-a, --all-interfaces Show information about all interfaces. -c, --change-active Change active slave. -d, --detach Removes slave interfaces from the bonding device. -f, --force Force actions to be taken if one of the specified interfaces appears not to belong to an Ethernet device. -h, --help Display a help message and exit. -u, --usage Show usage information and exit. -v, --verbose Print warning and debug messages. -V, --version Show version information and exit. If not options are given, the default action will be to enslave interfaces. EXAMPLE
The following example shows how to setup a bonding device and enslave two real Ethernet devices to it: # modprobe bonding # ifconfig bond0 192.168.0.1 netmask 255.255.0.0 # ifenslave bond0 eth0 eth1 AUTHOR
ifenslave was originally written by Donald Becker <becker@cesdis.gsfc.nasa.gov>, and has since been updated by various kernel developers. This manual page was written by Guus Sliepen <guus@debian.org> for the Debian GNU/Linux system. May 31, 2019

Check Out this Related Man Page

tels(7) 						 Miscellaneous Information Manual						   tels(7)

NAME
tels, telm - STREAMS Telnet slave (pseudo-terminal) driver, STREAMS Telnet master driver (used by telnetd only), respectively SYNOPSIS
DESCRIPTION
A Telnet pseudo-terminal consists of a tightly-coupled pair of character devices, called the master device and slave device. The master and slave device drivers work together to provide a Telnet connection on the server side where the master provides a connection to and the slave provides a terminal device special file access for the Telnet application processes, as depicted below: -------------------------- | Pseudo terminal functions| Application <--> |--------------------------| <--> telnetd Processes | Slave | Master | | (tels) | (telm) | -------------------------- The slave driver, with (STREAMS pty emulation module) and (STREAMS line discipline module) pushed on top (not shown for simplicity), pro- vides a terminal interface as described in termio(7). Whereas devices that provide the terminal interface described in termio(7) have a hardware device behind them; in contrast, the slave device has manipulating it through the master side of the Telnet pseudo terminal. There are no nodes in the file system for each individual master device. Rather, the master driver is set up as a STREAMS clone(7) driver with its major device number set to the major for the clone driver and its minor device number set to the major for the driver. The master driver is opened by telnetd using the open(2) system call with as the device file parameter. The clone open finds the next available minor number for the master device. The master device is available only if it and its corresponding slave device are not already opened. In order to use the STREAMS Telnet subsystem, a node for the master driver and N number of Telnet slave devices must be installed. The number of slave devices is set by a kernel tunable parameter called This can be modified using SAM; its default and minimum value is 60. The value of is the upper limit of the number of telnet sessions that can be opened. Multiple opens are allowed on the Telnet slave device. The master and slave drivers pass all STREAMS messages to their adjacent drivers. When the connection is closed from the Telnet client side, an message is sent to the corresponding slave device which will render that slave device unusable. The process on the slave side gets the errno when attempting a write(2) system call to the slave device file but it will be able to read any data remaining in the slave stream. Finally, when all the data has been read, the read(2) system call will return 0, indicating that the slave can no longer be used. AUTHOR
and were developed by HP. FILES
Streams Telnet master clone device Streams slave devices where N is the minor number of the slave device and 0 < N < SEE ALSO
insf(1M), open(2), ioctl(2), streamio(7), ldterm(7), telnetd(1M), ptem(7). tels(7)

Featured Tech Videos