Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

tc-basic(8) [posix man page]

Basic classifier in tc(8)					       Linux						 Basic classifier in tc(8)

NAME
basic - basic traffic control filter SYNOPSIS
tc filter ... basic [ match EMATCH_TREE ] [ action ACTION_SPEC ] [ classid CLASSID ] DESCRIPTION
The basic filter allows to classify packets using the extended match infrastructure. OPTIONS
action ACTION_SPEC Apply an action from the generic actions framework on matching packets. classid CLASSID Push matching packets into the class identified by CLASSID. match EMATCH_TREE Match packets using the extended match infrastructure. See tc-ematch(8) for a detailed description of the allowed syntax in EMATCH_TREE. SEE ALSO
tc(8), tc-ematch(8) iproute2 21 Oct 2015 Basic classifier in tc(8)

Check Out this Related Man Page

Firewall mark classifier in tc(8)                                      Linux                                     Firewall mark classifier in tc(8)

NAME
fw - fwmark traffic control filter SYNOPSIS
tc filter ... fw [ classid CLASSID ] [ action ACTION_SPEC ] DESCRIPTION
the fw filter allows to classify packets based on a previously set fwmark by iptables. If it is identical to the filter's handle, the fil- ter matches. iptables allows to mark single packets with the MARK target, or whole connections using CONNMARK. The benefit of using this filter instead of doing the heavy-lifting with tc itself is that on one hand it might be convenient to keep packet filtering and classifi- cation in one place, possibly having to match a packet just once, and on the other users familiar with iptables but not tc will have a less hard time adding QoS to their setups. OPTIONS
classid CLASSID Push matching packets to the class identified by CLASSID. action ACTION_SPEC Apply an action from the generic actions framework on matching packets. EXAMPLES
Take e.g. the following tc filter statement: tc filter add ... handle 6 fw classid 1:1 will match if the packet's fwmark value is 6. This is a sample iptables statement marking packets coming in on eth0: iptables -t mangle -A PREROUTING -i eth0 -j MARK --set-mark 6 SEE ALSO
tc(8), iptables(8), iptables-extensions(8) iproute2 21 Oct 2015 Firewall mark classifier in tc(8)
Man Page

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Why does /bin contain binaries for builtins?

Why do shell builtins like echo and pwd have binaries in /bin? When I do which pwd, I get the one in /bin. that means that I am not using the builtin version? What determines which one gets used? Is the which command a definitive way to determine what is being run when I enter pwd? (16 Replies)
Discussion started by: glev2005
16 Replies

2. Tips and Tutorials

Unix File Permissions

Introduction I have seen some misinformation regarding Unix file permissions. I will try to set the record straight. Take a look at this example of some output from ls: $ ls -ld /usr/bin /usr/bin/cat drwxrwxr-x 3 root bin 8704 Sep 23 2004 /usr/bin -r-xr-xr-x 1 bin bin ... (6 Replies)
Discussion started by: Perderabo
6 Replies

3. Shell Programming and Scripting

Scripts without shebang

I see lot of ad-hoc shell scripts in our servers which don't have a shebang at the beginning . Does this mean that it will run on any shell ? Is it a good practice to create scripts (even ad-hoc ones) without shebang ? (16 Replies)
Discussion started by: kraljic
16 Replies

4. UNIX for Advanced & Expert Users

When is a _function_ not a _function_?

For a starter I know the braces are NOT in the code... Consider these code snippets:- #!/bin/bash --posix x=0 somefunction() if then echo "I am here." fi # somefunction #!/bin/bash --posix x=0 somefunction() if (2 Replies)
Discussion started by: wisecracker
2 Replies

5. Fedora

Is UNIX an open source OS ?

Hi everyone, I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX. Ok onto business, my questions are-: Was/Is UNIX ever an open source operating system ? If UNIX was... (21 Replies)
Discussion started by: sreyan32
21 Replies

6. OS X (Apple)

Installing Dash Shell on OS X Lion

For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this: If you don't have gcc on your system: 0. Download and install the Command Line Tools for Xcode package from Sign In - Apple * 1. Download the dash... (2 Replies)
Discussion started by: Scrutinizer
2 Replies

7. Shell Programming and Scripting

Equivalent to let command in POSIX shell

Hi all, I am learning POSIX shell programming, and the book I read, uses the let command for integer arithmetic. I have downloaded and use the shellcheck program on Linux. This programs says: In POSIX sh, 'let' is undefined. See the screenshot attached. What is the POSIX... (1 Reply)
Discussion started by: johnprogrammer
1 Replies

8. What is on Your Mind?

I'll probably never be the best in the field...

I don't know how to start this but here goes. I've been "using" Linux for over 10 years, possibly more and I still feel like I'm nowhere where I should be. I'll be fair most of my time was spent either figuring out how to run games on *nix at the time but as I got older and "wiser" I... (8 Replies)
Discussion started by: samthewildone
8 Replies

9. UNIX for Advanced & Expert Users

[Tip] How to display the number of logged-in users

In a professional environment with traditional application you often want (or are asked) to report the users. Traditionally there is the who command who | awk '{print $1}'telnetd or sshd register the users in the utmp file, to be shown with who, w, users, finger, pinky, ... In addition they... (1 Reply)
Discussion started by: MadeInGermany
1 Replies

10. What is on Your Mind?

The square root code I coded on this site...

Hi all, (mainly Neo)... I keep noticing that the SQRT code I wrote recently for a POSIX shell keeps appearing, (the green colour sticks out like a sore thumb). So I decided to take a look on Google. Guess what? UNIX.COM comes first in Google's listing just from two words, see image... (2 Replies)
Discussion started by: wisecracker
2 Replies