To change permissions using chmod, I can use 2 methods. Since I don't know the terminology, I am calling them Method1 and Method2.
In the below example, both Method1 and Method2 do the same thing. Which one is you favourite method ?
From FreeBSD how could I access files/directories in my Windows XP machine (networked) Is there any program in FreeBSD/Unix that I could use to emulate/control my Windows XP machine and what do I need to enable or install in my Windows XP machine (6 Replies)
Hello
Here i got a problem, i bought new 40GB hard disk today, i made it as Primary Slave, No when i install Solaris, it says disk need fdisk to make solaris partition, but it does not say which disk need partition, i mean i have two disks, how i suppose to know which disk this will partition,... (1 Reply)
Discussion started by: abidmalik
1 Replies
3. Post Here to Contact Site Administrators and Moderators
Hi there! I liked your forum so much! I'm a professional moderator and I would like to moderate your forum or any part of it. If you are interested in this idea, please apply to me on my e-mail. (5 Replies)
Hi guys,
I'm pretty much a newbie to C.I need professional advice on my project.I'm supposed to write a program to scan a directory for .exe files and list them if any and also subsequently scan the subfolders for the same and so on...
Any advice on how to do it would be gladly accepted.... (3 Replies)
Hello,
Who actually wrote Professional Linux Programming of Wrox publication as there are two different sets of writers, one set consists of Jon Masters and Richard Blum and another set of writers is Neil Mathew with lots of other writers. Plz resolve it. I'm really confused.
Regards.. (0 Replies)
i think it is the same in both... Iam i right? (1 Reply)
Discussion started by: sumaiya
1 Replies
LEARN ABOUT DEBIAN
sc_tracediff
SC_TRACEDIFF(1) BSD General Commands Manual SC_TRACEDIFF(1)NAME
sc_tracediff -- display traceroute paths where the path has changed.
SYNOPSIS
sc_tracediff [-a] [-m method] [-n] file1.warts file2.warts
DESCRIPTION
The sc_tracediff utility displays pairs of traceroutes to a destination where the path has changed. It takes two warts files as input and
displays paths where a hop differs by its address. The options are as follows:
-a dump all traceroute pairs regardless of whether they have changed.
-m method
specifies the method used to match pairs of traceroutes together. If dst is specified, traceroutes are matched if the destination IP
address of both traces are the same. If userid is specified, traceroutes are matched if the userid field of both traces are the
same. If dstuserid is specified, traceroutes are matched if the destination IP address and userid fields are the same. By default,
the destination IP address is used.
-n names should be reported instead of IP addresses, where possible.
sc_tracediff can be useful in network monitoring to identify when a forward IP path has changed. In this scenario, it is recommended that
Paris traceroute is used with the same UDP source and destination ports for each execution of scamper so that only paths that have changed
are identified, not merely alternate paths visible due to per-flow load-balancing. By default scamper uses a source port based on the
process ID, which will change with each execution of scamper.
EXAMPLES
The command:
scamper -O warts -o file1.warts -c 'trace -P udp-paris -s 31337' -f list.txt
collects the forward IP paths towards a set of IP addresses found in list.txt using 31337 as the UDP source port value. If the above command
is adjusted to subsequently collect file2.warts, then we can identify paths that have subsequently changed with the command:
sc_tracediff file1.warts file2.warts
If Paris traceroute with ICMP probes is preferred, then the following invocation of scamper is appropriate:
scamper -O warts -o file1.warts -c 'trace -P icmp-paris -d 31337' -f list.txt
In this case, scamper uses 31337 as the ICMP checksum value in each probe.
SEE ALSO scamper(1),
B. Augustin, X. Cuvellier, B. Orgogozo, F. Viger, T. Friedman, M. Latapy, C. Magnien, and R. Teixeira, Avoiding traceroute anomalies with
Paris traceroute, Proc. ACM/SIGCOMM Internet Measurement Conference 2006.
AUTHOR
sc_tracediff is written by Matthew Luckie <mjl@luckie.org.nz>.
BSD April 21, 2011 BSD