Wow using the first option I have got the exact thing I wanted. Thank you very much:
there was only a small modification needed to get the $pdbid and $ChainId values correctly.
Dear all,
I am novice in C+= programing. I would like to seek help in one of the progra. Here it is, I have txt file which has the data as following order
varA varB
-21 0
-21.2 3, 4, 5, 6
-21.4 45, 65, 87, 98, 98
-22.0 345677, 349887, 98766, 877654, 987543
-23.0 76549,... (17 Replies)
I'm having trouble with a simple piece of code.
IFS=,
echo "1,2,3,4,5,6,7,8" | while read x y
do
echo "x=$x"
echo "y=$y"
done
I'm hoping for
x=1
y=2
x=3
y=4
.
.
.
but I'm getting
x=1 (3 Replies)
I have a file of lines with the following format:
AACCCGTAGATCCGAACTTGTG ACCCGTAGATCCGAACTTGTG CCGTAGATCCGAACTTGTG CGTAGATCCGAACTTGT I want to give a header to each line, using awk, where the header is equal to the line that follows, like this:
>AACCCGTAGATCCGAACTTGTG ... (2 Replies)
Hey everyone,
I have a bunch of lines with values in field 4 that I am interested in.
If these values are between 1 and 3 I want it to count all these values to all be counted together and then have the computer print out
LOW and the number of lines with those values in between 1 and 3,... (2 Replies)
I have a file containing multiple values, some of them are pipe separated which are to be read as separate values and some of them are single value all are these need to store in variables.
I need to read this file which is an input to my script
Config.txt
file name, first path, second... (7 Replies)
Looking for a little help here.
I have 1000's of text files within a multiple folders.
YYYY/
/MM
/1000's Files
Eg.
2014/01/1000 files
2014/02/1237 files
2014/03/1400 files
There are folders for each year and each month, and within each monthly folder there are... (4 Replies)
Hi,
I managed to read and print variable as shown in the below code.
table_name=table1,table2,table3
i=0
IFS=","
for i in $table_name
do
echo $i
done
Is there a way how I can read more than one variable. For example I need to read 2 variables and populate the output... (6 Replies)
Hello Gurus,
I have a multiple pipe separated files which have records going over multiple Lines. End of line separator is \n and records going over multiple lines have <CR> as separator. below is example from one file.
1|ABC DEF|100|10
2|PQ
RS
T|200|20
3| UVWXYZ|300|30
4| GHIJKL|400|40... (7 Replies)
I have requirement to split below file (sample.csv) into multiple files by using the unique columns (first 3 are unique columns)
sample.csv
123|22|56789|ABCDEF|12AB34|2019-07-10|2019-07-10|443.3400|1|1
123|12|5679|BCDEFG|34CD56|2019-07-10|2019-07-10|896.7200|1|2... (3 Replies)
Discussion started by: RVSP
3 Replies
LEARN ABOUT NETBSD
pcap_get_selectable_fd
PCAP_GET_SELECTABLE_FD(3) Library Functions Manual PCAP_GET_SELECTABLE_FD(3)NAME
pcap_get_selectable_fd - get a file descriptor on which a select() can be done for a live capture
SYNOPSIS
#include <pcap/pcap.h>
int pcap_get_selectable_fd(pcap_t *p);
DESCRIPTION
pcap_get_selectable_fd() returns, on UNIX, a file descriptor number for a file descriptor on which one can do a select() or poll() to wait
for it to be possible to read packets without blocking, if such a descriptor exists, or -1, if no such descriptor exists. Some network
devices opened with pcap_create() and pcap_activate(), or with pcap_open_live(), do not support select() or poll() (for example, regular
network devices on FreeBSD 4.3 and 4.4, and Endace DAG devices), so -1 is returned for those devices.
Note that on most versions of most BSDs (including Mac OS X) select() and poll() do not work correctly on BPF devices;
pcap_get_selectable_fd() will return a file descriptor on most of those versions (the exceptions being FreeBSD 4.3 and 4.4), a simple
select() or poll() will not return even after the read timeout expires. To work around this, an application that uses select() or poll()
to wait for packets to arrive must put the pcap_t in non-blocking mode, and must arrange that the select() or poll() have a timeout less
than or equal to the read timeout, and must try to read packets after that timeout expires, regardless of whether select() or poll() indi-
cated that the file descriptor for the pcap_t is ready to be read or not. (That workaround will not work in FreeBSD 4.3 and later; how-
ever, in FreeBSD 4.6 and later, select() and poll() work correctly on BPF devices, so the workaround isn't necessary, although it does no
harm.)
Note also that poll() doesn't work on character special files, including BPF devices, in Mac OS X 10.4 and 10.5, so, while select() can be
used on the descriptor returned by pcap_get_selectable_fd(), poll() cannot be used on it those versions of Mac OS X. Kqueues also don't
work on that descriptor. poll(), but not kqueues, work on that descriptor in Mac OS X releases prior to 10.4; poll() and kqueues work on
that descriptor in Mac OS X 10.6 and later.
pcap_get_selectable_fd() is not available on Windows.
RETURN VALUE
A selectable file descriptor is returned if one exists; otherwise, -1 is returned.
SEE ALSO pcap(3), select(2), poll(2)
5 April 2008 PCAP_GET_SELECTABLE_FD(3)