AV Bridge CONFERENCE
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History
NAME: history - command history
SYNOPSIS: history [limit]
DESCRIPTION: Since many of the programs read user input a line at a time, the command history is used to
keep track of these lines and also recall historic information
HISTORY NAVIGATION: The command history can be navigated using the up and down arrow keys. The up
arrow will move up a single entry in the command history while the down arrow moves down in the command
history.
HISTORY EXPANSION: The command history supports the expansion functionality from which previous
commands can be recalled from within a single session. History expansion is performed immediately after a
complete line is read.
Listed below are examples of history expansion:
* !!
Subsitute the the last command line.
* !N
Substitute the Nth command line (absolute as per ’history’ command)
* !-N
Substitute the command line entered N lines before (relative)
EXAMPLES
history
Displays the current command buffer
history 5
Sets the history command buffer to remember the last 5 unique entries
Network Ping
NAME: network ping - send ICMP ECHO_REQUEST to network hosts
SYNOPSIS: network ping [count <count>] [size <size>] <destination-ip>
DESCRIPTION: Use the ICMP protocol’s mandatory ECHO_REQUEST datagram to elicit an ICMP
ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams have an IP and ICMP header,
followed by a struct timeval and then an arbitrary number of pad bytes used to fill out the packet.
OPTIONS
count
Stop after sending count ECHO_REQUEST packets. With deadline option, ping waits for count
ECHO_REPLY packets, until the timeout expires. The default is 5.
destination
The destination IP address where the ECHO_REQUESTS are sent
size
The data size of the ICMP packet to send. The default is 56 bytes
EXAMPLES
network ping 192.168.1.1
Attempt to send 5 ICMP ECHO_REQUESTs with data size 56 to the host at 192.168.1.1
network ping count 10 size 100 192.168.1.1
Attempt to send 10 ICMP ECHO_REQUESTs with data size of 100 to the host at 192.168.1.1
