11-16-2011
Additionally, could you please post what is that you are trying to achieve? Sample input, expected operation, sample output
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a shell script with code
. perf.env
cd $QRY_DIR
for SHELL_FILE in sql1
do
export SNAME=$SHELL_FILE
${SCRIPT_DIR}/perf_qry.sh ${SPOOL_DIR} ${DB_ENVNAME} ${NAME} &
RC=$(expr ${RC:-0} + $? )
sleep 60
if
then
echo sysdate>test1
echo query1.txt>>test1
grep -i... (0 Replies)
Discussion started by: ran16
0 Replies
2. Shell Programming and Scripting
Hi,
I have a shell script with code
. perf.env
cd $QRY_DIR
for SHELL_FILE in sql1
do
export SNAME=$SHELL_FILE
${SCRIPT_DIR}/perf_qry.sh ${SPOOL_DIR} ${DB_ENVNAME} ${NAME} &
RC=$(expr ${RC:-0} + $? )
sleep 60
if
then
echo sysdate>test1
echo query1.txt>>test1
grep -i... (6 Replies)
Discussion started by: ran16
6 Replies
3. UNIX for Advanced & Expert Users
Hi i have 3 sql scripts that need to be executed simultaneously, and independent of one another, how do i do that in Unix AIX 5.3 (1 Reply)
Discussion started by: yschd
1 Replies
4. Shell Programming and Scripting
What is the difference between the following commands. Please with example?
rsh
ssh
scp
rcp
rlogin
ftp
telnet
Cheers.. (3 Replies)
Discussion started by: gwgreen1
3 Replies
5. Shell Programming and Scripting
I have a program dnapars
I execute the program from command line as following:
./dnapars
The program then prompts me some message as a user menu from where I have to select a series of options in the order R U Y R. And then I copy the output file (outfile) in another result file.
I wrote the... (3 Replies)
Discussion started by: deeptisjains
3 Replies
6. Shell Programming and Scripting
I am trying to run SSH , mkdir and other unix commands using Perl CGI. But i am not able to Execute these commands.
Please help me out !!!!
SSH and mkdir is necessity for me.
I will be thankful to you...!!!!!
I am trying like:
In perl CGI file i am writing like: @list = `ssh... (28 Replies)
Discussion started by: Navrattan Bansa
28 Replies
7. Shell Programming and Scripting
I need to run few commands in a ksh script sequentially.
Some of the commands are jobs submitted to the server and the consecutive commands are dependent on the completion of the jobs submitted to the server.
It works if i separate the commands into different files like this
#!/bin/ksh... (1 Reply)
Discussion started by: prashob123
1 Replies
8. Shell Programming and Scripting
I have a question:
Where would I put the Command line (of any command) so that it executes every time I log on? Where would I put it if I want it to execute every time I start a new shell? (5 Replies)
Discussion started by: Nabeel Nazir
5 Replies
9. UNIX for Dummies Questions & Answers
Hi all,
I have a problem with ftp execution within unix environment.
I'd like to get files on remote and delete them later, but here is too crowd so I can accidentally delete some files. Can I delete only the files I can get to the local folder? I can ask this question with a different... (14 Replies)
Discussion started by: attillam
14 Replies
10. Shell Programming and Scripting
I don't know to debug the program todaylive.pl program.
plz someone let me know what are the commands I need to know to debug the perl programs to find out the error on it. (3 Replies)
Discussion started by: ramkumar15
3 Replies
LEARN ABOUT XFREE86
sample
Packet sample action in tc(8) Linux Packet sample action in tc(8)
NAME
sample - packet sampling tc action
SYNOPSIS
tc ... action sample rate RATE group GROUP [ trunc SIZE ] [ index INDEX ]
tc ... action sample index INDEX
DESCRIPTION
The sample action allows sampling packets matching classifier.
The packets are chosen randomly according to the rate parameter, and are sampled using the psample generic netlink channel. The user can
also specify packet truncation to save user-kernel traffic. Each sample includes some informative metadata about the original packet, which
is sent using netlink attributes, alongside the original packet data.
The user can either specify the sample action parameters as presented in the first form above, or use an existing sample action using its
index, as presented in the second form.
SAMPLED PACKETS METADATA FIELDS
The metadata are delivered to userspace applications using the psample generic netlink channel, where each sample includes the following
netlink attributes:
PSAMPLE_ATTR_IIFINDEX
The input interface index of the packet, if there is one.
PSAMPLE_ATTR_OIFINDEX
The output interface index of the packet. This field is not relevant on ingress sampling
PSAMPLE_ATTR_ORIGSIZE
The size of the original packet (before truncation)
PSAMPLE_ATTR_SAMPLE_GROUP
The psample group the packet was sent to
PSAMPLE_ATTR_GROUP_SEQ
A sequence number of the sampled packet. This number is incremented with each sampled packet of the current psample group
PSAMPLE_ATTR_SAMPLE_RATE
The rate the packet was sampled with
OPTIONS
rate RATE
The packet sample rate. RATE is the expected ratio between observed packets and sampled packets. For example, RATE of 100 will lead
to an average of one sampled packet out of every 100 observed.
trunc SIZE
Upon set, defines the maximum size of the sampled packets, and causes truncation if needed
group GROUP
The psample group the packet will be sent to. The psample module defines the concept of groups, which allows the user to match spe-
cific sampled packets in the case of multiple sampling rules, thus identify only the packets that came from a specific rule.
index INDEX
Is a unique ID for an action. When creating new action instance, this parameter allows to set the new action index. When using
existing action, this parameter allows to specify the existing action index. The index must 32bit unsigned integer greater than
zero.
EXAMPLES
Sample one of every 100 packets flowing into interface eth0 to psample group 12:
tc qdisc add dev eth0 handle ffff: ingress
tc filter add dev eth0 parent ffff: matchall
action sample rate 100 group 12 index 19
Use the same action instance to sample eth1 too:
tc qdisc add dev eth1 handle ffff: ingress
tc filter add dev eth1 parent ffff: matchall
action sample index 19
SEE ALSO
tc(8), tc-matchall(8) psample(1)
iproute2 31 Jan 2017 Packet sample action in tc(8)