10-03-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Is it possible to combine a regular expression with a aritmetical expression? For example, taking a 8-numbers caracter sequece and casting each output of a grep, comparing to a constant.
THX! (2 Replies)
Discussion started by: Z0mby
2 Replies
2. UNIX for Dummies Questions & Answers
I have a file with data that looks like -
record nullable { final_delim=end ,delim="~%%~" ,quote=none }
(
1_UPC:string;
2_QUANTITY:string;
)
I want to fetch the first column that starts with integer. e.g - 1_UPC, 2_QUANTITY.
I tried "awk -F ":" -v var1="^0-9" '$1==var1' inschemafile".... (2 Replies)
Discussion started by: mahabunta
2 Replies
3. Shell Programming and Scripting
Hello, All.
please help me with this problem.
i need to use variable as regular expression.
some thing like this:
BEGIN {
RS="\n";
ORS="\n";
reg_exp = ".+Dec.+";
# i mean that regular expression is any symbol before "Dec" and any symbol after it. For example <Worksheet... (6 Replies)
Discussion started by: Rjkz
6 Replies
4. Linux
Regular expression to extract "y" from "abc/x.y.z" (2 Replies)
Discussion started by: rag84dec
2 Replies
5. Shell Programming and Scripting
I've a file
$ cat size
1234
5678
vamsi
I want to match the lines which has just 4 digits and nothing else.
So
$ cat size | nawk ' $0 ~ // {print}'
1234
5678
But when I use the repetition clause it doesn't work
cat size | nawk ' $0 ~ /{4}/ {print}'
I actually want to filter out the... (8 Replies)
Discussion started by: vamsi.coe
8 Replies
6. Shell Programming and Scripting
Hi FolksI want to write a nawk script that dynamically creates variable numbers of regular expressions on the fly rather than using constants. Is this possible?They would need to be used within an if statement within the nawk program: - if ( "my string of regex's" ) Thanks (7 Replies)
Discussion started by: steadyonabix
7 Replies
7. Shell Programming and Scripting
CA_RELEASE has a value of 6. I need to check if that this is a numeric value. if not error.
source $CA_VERSION_DATA
if * ]
then
echo "CA_RELESE $CA_RELEASE is invalid"
exit -1
fi
+ source /etc/ncgl/ca_version_data
++ CA_PRODUCT_ID=samxts
++ CA_RELEASE=6
++ CA_WEEK_NO=7
++... (3 Replies)
Discussion started by: ketkee1985
3 Replies
8. Programming
Hi all,
How am I read a file, find the match regular expression and overwrite to the same files.
open DESTINATION_FILE, "<tmptravl.dat" or die "tmptravl.dat";
open NEW_DESTINATION_FILE, ">new_tmptravl.dat" or die "new_tmptravl.dat";
while (<DESTINATION_FILE>)
{
# print... (1 Reply)
Discussion started by: jessy83
1 Replies
9. UNIX for Advanced & Expert Users
Hello All,
I'm trying to extract the lines between two consecutive elements of an array from a file.
My array looks like:
problem_arr=(PRS111 PRS213 PRS234)
j=0
while } ]
do
k=`expr $j + 1`
sed -n "/${problem_arr}/,/${problem_arr}/p" problemid.txt
---some operation goes... (11 Replies)
Discussion started by: InduInduIndu
11 Replies
10. Shell Programming and Scripting
I am trying to test if I can replace a regular expression in 'nawk' with a variable.
Please let me know why it is not working. I am using ksh88i on solaris8
I am trying use this test as a building block to filter active external DNS connections.
Ideally I want to pass variable defined... (4 Replies)
Discussion started by: kchinnam
4 Replies
LEARN ABOUT MINIX
tc-choke
TC(8) Linux TC(8)
NAME
choke - choose and keep scheduler
SYNOPSIS
tc qdisc ... choke limit packets min packets max packets avpkt bytes burst packets [ ecn ] [ bandwidth rate ] probability chance
DESCRIPTION
CHOKe (CHOose and Keep for responsive flows, CHOose and Kill for unresponsive flows) is a classless qdisc designed to both identify and
penalize flows that monopolize the queue. CHOKe is a variation of RED, and the configuration is similar to RED.
ALGORITHM
Once the queue hits a certain average length, a random packet is drawn from the queue. If both the to-be-queued and the drawn packet belong
to the same flow, both packets are dropped. Otherwise, if the queue length is still below the maximum length, the new packet has a config-
urable chance of being marked (which may mean dropped). If the queue length exceeds max, the new packet will always be marked (or
dropped). If the queue length exceeds limit, the new packet is always dropped.
The marking probability computation is the same as used by the RED qdisc.
PARAMETERS
The parameters are the same as for RED, except that RED uses bytes whereas choke counts packets. See tc-red(8) for a description.
SOURCE
o R. Pan, B. Prabhakar, and K. Psounis, "CHOKe, A Stateless Active Queue Management Scheme for Approximating Fair Bandwidth Alloca-
tion", IEEE INFOCOM, 2000.
o A. Tang, J. Wang, S. Low, "Understanding CHOKe: Throughput and Spatial Characteristics", IEEE/ACM Transactions on Networking, 2004
SEE ALSO
tc(8), tc-red(8)
AUTHOR
sched_choke was contributed by Stephen Hemminger.
iproute2 August 2011 TC(8)