How can I control the screen output when trying to read a large file onto the screen x number of lines at a time. I'm trying to use this is a bourne shell script. I want to display 10 lines of a file, pause the screen so that a user can read the file, and then display the next 10 lines of the file,... (6 Replies)
hi can some body please help me...i'm been sitting here trying to figure how to do this..but still don't understand. Like each type of *.src (if any) in the given directory will be displayed on the screen one page at a time....
can someone explain how to do this..plz (1 Reply)
Hello All,
I have a file that is formatted like this
1234556
1234567
1234588
1123888
1999999
1010101
1919191
1919191....
for a total of 26000 + lines
how do I get a script to read lets say 50 lines at a time
and display the output to the screen in column format around 5 or 6... (2 Replies)
Hi,
How can i increase the size of my display on AIX 5.3.What i mean is e.g if i do and ps -ef i would get some like:
/data/app/oracle/product/10.2
/usr/bin/ksh /usr/local/bin/s
i want it to show the whole thing on the screen without cutting it,because there is still space on the screen... (0 Replies)
Hi,
Ive 3 screens, 2 nvidia graphiccards and all works fine with the nvidia binary driver and xinerama. I can maximize all windows an one screen, but now i need to span it over all 3 screens.
Any ideas?
thanks in advance. (3 Replies)
Hi,
Anyone can help me on how to return back to normal size not the full size of my virtual box screen display and also display the menu bar from the top.
Thanks in Advance. (4 Replies)
Hi,
Im running ubuntu server 8.04 LTS, but I want to change the initial login screen message. How can I do this? Which files do I need to change for this?
So just to be clear when I reboot the server the login text which is then displayed thats what I want to change not the text that is... (5 Replies)
Hi,
I have a menu of around 10 lines with options.
I want to display it in bottom right corner of screen for better display.
I can do it with clear screen. But I don't want to use it, because it will clear the existing text. After one choice from menu is executed, the menu should just place... (3 Replies)
I connect via vnc to a linux computer.
after a logout, I cannot see the files on the screen (although i can see the screensaver).
I can open a terminal and see the files etc.
How can i see the files on the screen again? (5 Replies)
Discussion started by: FelipeAd
5 Replies
LEARN ABOUT FREEBSD
if_gre
GRE(4) BSD Kernel Interfaces Manual GRE(4)NAME
gre -- encapsulating network device
SYNOPSIS
To compile the driver into the kernel, place the following line in the kernel configuration file:
device gre
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_gre_load="YES"
DESCRIPTION
The gre network interface pseudo device encapsulates datagrams into IP. These encapsulated datagrams are routed to a destination host, where
they are decapsulated and further routed to their final destination. The ``tunnel'' appears to the inner datagrams as one hop.
gre interfaces are dynamically created and destroyed with the ifconfig(8) create and destroy subcommands.
This driver corresponds to RFC 2784. Encapsulated datagrams are prepended an outer datagram and a GRE header. The GRE header specifies the
type of the encapsulated datagram and thus allows for tunneling other protocols than IP. GRE mode is also the default tunnel mode on Cisco
routers. gre also supports Cisco WCCP protocol, both version 1 and version 2.
The gre interfaces support a number of additional parameters to the ifconfig(8):
grekey Set the GRE key used for outgoing packets. A value of 0 disables the key option.
enable_csum Enables checksum calculation for outgoing packets.
enable_seq Enables use of sequence number field in the GRE header for outgoing packets.
EXAMPLES
192.168.1.* --- Router A -------tunnel-------- Router B --- 192.168.2.*
/
/
+------ the Internet ------+
Assuming router A has the (external) IP address A and the internal address 192.168.1.1, while router B has external address B and internal
address 192.168.2.1, the following commands will configure the tunnel:
On router A:
ifconfig greN create
ifconfig greN inet 192.168.1.1 192.168.2.1
ifconfig greN inet tunnel A B
route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1
On router B:
ifconfig greN create
ifconfig greN inet 192.168.2.1 192.168.1.1
ifconfig greN inet tunnel B A
route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1
NOTES
The MTU of gre interfaces is set to 1476 by default, to match the value used by Cisco routers. This may not be an optimal value, depending
on the link between the two tunnel endpoints. It can be adjusted via ifconfig(8).
For correct operation, the gre device needs a route to the decapsulating host that does not run over the tunnel, as this would be a loop.
The kernel must be set to forward datagrams by setting the net.inet.ip.forwarding sysctl(8) variable to non-zero.
SEE ALSO gif(4), inet(4), ip(4), me(4), netintro(4), protocols(5), ifconfig(8), sysctl(8)
A description of GRE encapsulation can be found in RFC 2784 and RFC 2890.
AUTHORS
Andrey V. Elsukov <ae@FreeBSD.org>
Heiko W.Rupp <hwr@pilhuhn.de>
BUGS
The current implementation uses the key only for outgoing packets. Incoming packets with a different key or without a key will be treated as
if they would belong to this interface.
The sequence number field also used only for outgoing packets.
BSD November 7, 2014 BSD