Trying to log in to school server using terminal on mac.
Hi everyone I am a complete beginner and already confused. the instructor has step by step directions for students on PC to download putty and do it that way. He neglects mac unfortunately. I attached the documents that instructs students how to do it. maybe you could read it and guide me? Iv done research myself but to no avail. he doesnt supply any info on the server name besides an IP address.
I asked my instructor and he told me to just look it up myself. have been doing it for a while and I still dont understand. Can anyone offer any suggestions it will be much appreciated.
Hey everyone
I'm new to UNIX due to the new Mac OS X operating system and would like some help. I'm trying to send an email via the UNIX-Shell-Terminal i Mac OS X, (it's called darwin)
How do I do that? When I enter the Command mail I can send messages to root and with the command -forward... (4 Replies)
mac 10.4>terminal>linux remote server>ssh login accepted>session closed-why?
AHHHH!!
I have been connecting to the server with the line: ssh userid@website.com
The remote server accepts my password; logs me in with ssh; posts a lovely welcome message AND closes the session. Is this a "term... (0 Replies)
Hi everyone. I'm new to using the Terminal and was just wondering if anyone had a link to perhaps a list of commands. And tips on some useful websites to visit or books to read.
Oh and is there a way to delete just part of the Terminal's history? If so what is the command?
Thanks :) (2 Replies)
I finally got how to su - in my mac from the terminal. Now I would like to be able to add new users. useradd -m -d ..... doesn't seem to work. (1 Reply)
Hi,
I am new for SVN. Earlier I have been using CVS. When I checkout the code from SVN using Eclipse, the size of the source code checked out is 612MB. But when I try to checkout from terminal, from my 5.8 branch , the checked out source code's size is only 312.1 MB.
Can anyone tell me... (0 Replies)
Is there a trick to closing a mac terminal with a command? I would think you could just type exit into your terminal but that doesn't work. I also tried quit and close just for the hell of it and that didn't work either. Does anyone know what the command is? (1 Reply)
So found this C code online and need to compile it in Terminal on Mac.
Here is the code:
#include <stdio.h>
#include <math.h>
int option;
char q;
int number;
int currentsum;
int value;
void calc()
{
printf("\t\t\t\t\tBegin\n"); // says begin in top middle of screen
... (3 Replies)
Does anyone know the differences in commands when it come to Linux and Mac OS X? I'm wanting to know if I use "this" command in Linux and It doesn't work in Mac then what command is equivalent to the one in Linux. Example Ctrl+Alt+f2 switches to (tty2) so what equivalent switches to ttys2 on Mac? (13 Replies)
Discussion started by: 1negroup
13 Replies
LEARN ABOUT MOJAVE
tc-skbmod
skbmod action in tc(8) Linux skbmod action in tc(8)NAME
skbmod - user-friendly packet editor action
SYNOPSIS
tc ... action skbmod { [ set SETTABLE ] [ swap SWAPPABLE ] [ CONTROL ] [ index INDEX ] }
SETTABLE := [ dmac DMAC ] [ smac SMAC ] [ etype ETYPE ]
SWAPPABLE := mac
CONTROL := { reclassify | pipe | drop | shot | continue | pass }
DESCRIPTION
The skbmod action is intended as a usability upgrade to the existing pedit action. Instead of having to manually edit 8-, 16-, or 32-bit
chunks of an ethernet header, skbmod allows complete substitution of supported elements.
OPTIONS
dmac DMAC
Change the destination mac to the specified address.
smac SMAC
Change the source mac to the specified address.
etype ETYPE
Change the ethertype to the specified value.
mac Used to swap mac addresses. The swap mac directive is performed after any outstanding D/SMAC changes.
CONTROL
The following keywords allow to control how the tree of qdisc, classes, filters and actions is further traversed after this action.
reclassify
Restart with the first filter in the current list.
pipe Continue with the next action attached to the same filter.
drop
shot Drop the packet.
continue
Continue classification with the next filter in line.
pass Finish classification process and return to calling qdisc for further packet processing. This is the default.
EXAMPLES
To start, observe the following filter with a pedit action:
tc filter add dev eth1 parent 1: protocol ip prio 10
u32 match ip protocol 1 0xff flowid 1:2
action pedit munge offset -14 u8 set 0x02
munge offset -13 u8 set 0x15
munge offset -12 u8 set 0x15
munge offset -11 u8 set 0x15
munge offset -10 u16 set 0x1515
pipe
Using the skbmod action, this command can be simplified to:
tc filter add dev eth1 parent 1: protocol ip prio 10
u32 match ip protocol 1 0xff flowid 1:2
action skbmod set dmac 02:15:15:15:15:15
pipe
Complexity will increase if source mac and ethertype are also being edited as part of the action. If all three fields are to be changed
with skbmod:
tc filter add dev eth5 parent 1: protocol ip prio 10
u32 match ip protocol 1 0xff flowid 1:2
action skbmod
set etype 0xBEEF
set dmac 02:12:13:14:15:16
set smac 02:22:23:24:25:26
Finally, swap the destination and source mac addresses in the header:
tc filter add dev eth3 parent 1: protocol ip prio 10
u32 match ip protocol 1 0xff flowid 1:2
action skbmod
swap mac
As mentioned above, the swap action will occur after any smac/dmac substitutions are executed, if they are present.
SEE ALSO tc(8), tc-u32(8), tc-pedit(8)iproute2 21 Sep 2016 skbmod action in tc(8)