04-28-2008
10 More Discussions You Might Find Interesting
1. Programming
Hi,
Is it possible to use bitwise operators in bit fields?
For example:
typedef struct Mystruct {
unsigned char A :1 ;
unsigned char B :1 ;
} Mystruct;
and assume
struct Mystruct STR_1S, STR_2S, tempSTRS = {0};
then the following line:
tempSTRS = STR_1S & STR_2S;
gives the... (3 Replies)
Discussion started by: amatsaka
3 Replies
2. UNIX for Advanced & Expert Users
can anybody write a program to divide a number by another number using bitwise operators (9 Replies)
Discussion started by: areef4u
9 Replies
3. Programming
Hi !
How to reset a variable to 0 after a reset value, say 10 using bitwise
XOR.
For example,
int cnt=0;
if(cnt<10)
cnt++;
else
cnt = 0;
How can we achieve this by using XOR only.
thanks, (1 Reply)
Discussion started by: mrgubbala
1 Replies
4. Shell Programming and Scripting
I am taking an online course on Unix scripting. The topic is Unix arithmetic operators and the lesson is Logical and bitwise operations. It is not clear how much storage space Unix uses to represent integers that are typed. Bitwise negation caused me to question how many bits are used to... (3 Replies)
Discussion started by: dLloydm
3 Replies
5. Shell Programming and Scripting
Hi,
I am having two variables
IP="10.150.12.1"
netmask="255.255.255.0"
To get network number, I know that a bitwise & will help.
networkno=IP & netmask
My code is
#!/usr/bin/ksh
ip="10.150.12.1"
netmask="255.255.255.0"
networkno="$ip" & "$netmask"
echo $networkno
I am... (7 Replies)
Discussion started by: chaitanyapn
7 Replies
6. Emergency UNIX and Linux Support
Hello All,
i have two 16 bit binaries that in two different variables, i want to perform a bitwise AND between the two and store the result in a different variable.
can anyone throw some light on doing this in a bourne shell...
eg var1= 1110101010101011
... (8 Replies)
Discussion started by: venu
8 Replies
7. FAQ Submission Queue
The purpose of this article is revealing the unrevealed parts of the bitwise XOR.
As we aware, the truth table for the XOR operator is :
A B A^B
0 0 0
0 1 1
1 0 1
1 1 0
For example , 1^2 will be calculated as given below:
First the operands... (1 Reply)
Discussion started by: pandeesh
1 Replies
8. Shell Programming and Scripting
please any one can suggest me how to use bitesie || opearator to do this
#initallize a=0 b=0
#condition
if then
a=0
else a=1
fi
#bitwise or opeartion b = a || b
Please view this code tag video for how to use code tags when posting code and data. (3 Replies)
Discussion started by: Palaniappan
3 Replies
9. Shell Programming and Scripting
Hello,
I want to compute the bitwise number of matches in pairwise fashion for all columns. The problem is I have 18486955 rows and 750 columns. Please help with code, I believe this will take a lot of time, is there a way of tracking progress?
Input
Org1 Org2 Org3
A A T
A ... (9 Replies)
Discussion started by: ritakadm
9 Replies
10. Programming
Hello All,
I am writing basic state machine which maintains 8 different states and there is posibility that system may be in multiple states at a time (Except for state1 to state3. menas only once state can be active at a time from state1 to state3).
I have declared... (9 Replies)
Discussion started by: anand.shah
9 Replies
LEARN ABOUT CENTOS
arping
ARPING(8) System Manager's Manual: iputils ARPING(8)
NAME
arping - send ARP REQUEST to a neighbour host
SYNOPSIS
arping [-AbDfhqUV] [-c count] [-w deadline] [-s source] -I interface destination
DESCRIPTION
Ping destination on device interface by ARP packets, using source address source.
OPTIONS
-A The same as -U, but ARP REPLY packets used instead of ARP REQUEST.
-b Send only MAC level broadcasts. Normally arping starts from sending broadcast, and switch to unicast after reply received.
-c count
Stop after sending count ARP REQUEST packets. With deadline option, arping waits for count ARP REPLY packets, until the timeout
expires.
-D Duplicate address detection mode (DAD). See RFC2131, 4.4.1. Returns 0, if DAD succeeded i.e. no replies are received
-f Finish after the first reply confirming that target is alive.
-I interface
Name of network device where to send ARP REQUEST packets.
-h Print help page and exit.
-q Quiet output. Nothing is displayed.
-s source
IP source address to use in ARP packets. If this option is absent, source address is:
o In DAD mode (with option -D) set to 0.0.0.0.
o In Unsolicited ARP mode (with options -U or -A) set to destination.
o Otherwise, it is calculated from routing tables.
-U Unsolicited ARP mode to update neighbours' ARP caches. No replies are expected.
-V Print version of the program and exit.
-w deadline
Specify a timeout, in seconds, before arping exits regardless of how many packets have been sent or received. In this case arping
does not stop after count packet are sent, it waits either for deadline expire or until count probes are answered.
SEE ALSO
ping(8), clockdiff(8), tracepath(8).
AUTHOR
arping was written by Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>. It is now maintained by YOSHIFUJI Hideaki <yoshfuji@skbuff.net>.
SECURITY
arping requires CAP_NET_RAW capability to be executed. It is not recommended to be used as set-uid root, because it allows user to modify
ARP caches of neighbour hosts.
AVAILABILITY
arping is part of iputils package and the latest versions are available in source form at http://www.skbuff.net/iputils/iputils-cur-
rent.tar.bz2.
iputils-121221 10 June 2014 ARPING(8)