select.h(3HEAD) Headers select.h(3HEAD)NAME
select.h, select - select types
SYNOPSIS
#include <sys/select.h>
DESCRIPTION
The <sys/select.h> header defines the timeval structure, which includes the following members:
time_t tv_sec /* seconds */
suseconds_t tv_usec /* microseconds */
The time_t and suseconds_t types are defined as described in <sys/types.h>. See types.h(3HEAD).
The sigset_t type is defined as described in signal.h(3HEAD).
The timespec structure is defined as described in <time.h>. See time.h(3HEAD).
The <sys/select.h> header defines the fd_set type as a structure.
The following is defined as a macro:
FD_SETSIZE Maximum number of file descriptors in an fd_set structure.
Inclusion of the <sys/select.h> header can make visible all symbols from the headers <signal.h>, <sys/time.h>, and <time.h>.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO select(3C), signal.h(3HEAD), time.h(3HEAD), types.h(3HEAD), attributes(5), standards(5)SunOS 5.11 10 Sep 2004 select.h(3HEAD)
Check Out this Related Man Page
mqueue.h(3HEAD) Headers mqueue.h(3HEAD)NAME
mqueue.h, mqueue - message queues
SYNOPSIS
#include <mqueue.h>
DESCRIPTION
The <mqueue.h> header defines the mqd_t type, which is used for message queue descriptors. This will not be an array type. A message
queue descriptor may be implemented using a file descriptor, in which case applications can open up to at least OPEN_MAX file and message
queues.
The <mqueue.h> header defines the sigevent structure (as described in <signal.h>, see signal.h(3HEAD)) and the mq_attr structure, which is
used in getting and setting the attributes of a message queue. Attributes are initially set when the message queue is created. A mq_attr
structure has the following members:
long mq_flags message queue flags
long mq_maxmsg maximum number of messages
long mq_msgsize maximum message size
long mq_curmsgs number of messages currently queued
Inclusion of the <mqueue.h> header may make visible symbols defined in the headers <fcntl.h>, <signal.h>, <sys/types.h>, and <time.h>.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO fcntl.h(3HEAD), signal.h(3HEAD), time.h(3HEAD), types.h(3HEAD), attributes(5), standards(5)SunOS 5.10 30 Aug 2002 mqueue.h(3HEAD)
Hi folks,
As we all know, the "select" function give a number to each element as the number of elements in the select.
for example:
I have a program which ask a user to select a language:
===============================================================================
Please select the... (1 Reply)
I want to select files which have different extensions such as .cpp, .cs, .h
I can select one of them as
find . -name "*.cpp"
but I want to select all of them in one command only. It should be pretty simple but I'm not able to get it. Any help with the command will be greatly appreciated. (1 Reply)
Hi all,
I am trying to select some columns from a file, based on the list of values.
Would like to know how best I can achive this.
If coulmn 1 has a value of 57 then print the ist column (This works)
awk -F' ' '{if ( $1 == 57 ) {print $1}}' file.txt
Now my requirement is that I have to... (14 Replies)
alert_val=$( db2 "select value (( select distinct 1 from opus.alerts where alname = 'MQ_FAILURE_INTERFACE' and
aldatetime > current timestamp - 20 minutes),0) from sysibm.sysdummy1 with ur" | sed -n '/--/ {n; p;}')
Can some one please tell me why alert_val is not able to get the return value... (5 Replies)
Is select only supposed to report state changes on an FD's, state, whether or not it had pending input available in the first place? I've got a situation where select() repeatedly reports no FD's ready for stdin when there's lots of data available. And if it only reports changes, how is this... (2 Replies)
Below is my code. Every once in a while the select call takes as long as 150 seconds (discovered by printing time before and after this statement) while the timeout specified into it is only 1 second. Any clue why? I can't believe that select call which has been around for centuries can have a bug,... (15 Replies)
I need to delete half(approx) the file or select half the file by existence of some character
My file looks like
1
2
3
4
.
.
.
50
.
.
100I need to select only 50 to rest of the file or needs to delete the file upto 50.
Please help me out.. (6 Replies)
Requirement:-
SQLs
select name from v$datafile;
select name from v$controlfile;
select name from v$tempfile;
select MEMBER from v$logfile;
These sqls has to run in one script and o/p of each sql has to write in seperate files.But the o/p is like if we issue
select name from... (2 Replies)
Hi,
I have a text file with multiple sql statements in which I have pick only the below select update and delete statements and do print as given below.
All the select,update,delete statements will be as same as ( subquery with ().all statements ending with ; ) the examples given below.
1)... (19 Replies)
I want to select contents between two numbers say 1. and 2. from an output file which has many numbers but only the these two ending with a dot(.) eg 1. 2 . 32. etc I was looking to select with the use of a counter then modify the selected contents and put it in an output file where again the... (3 Replies)
PS3="Enter corresponding number and hit enter:"
select DIR in `cat mylist` QUIT
do
if
then
echo "INVALID INPUT"
else
if ; then
my commands .....
else
break
fi
fi
REPLY=''
done
The above will return something like below :
Select from the list of... (4 Replies)
Hi team,
I have two select statements and need to run them using SYSDBA user
select * from temp_temp_seg_usage;
select segment_name, tablespace_name, bytes/ (1024*1024) UsedMb from
dba_segments where segment_name='TEMP_TEMP_SEG_USAGE';
Need to run this using a shell script say named... (1 Reply)
From my script
#!/bin/bash
echo "Which of these does not belong in the group?"; \
select choice in Mercedes Audi Chevrolet Audi Porsche BMW Volkswagen; do
if ]; then
echo "Correct! Chevrolet is not a German marque."; break; fi
echo "Errr...no. Try again."
doneI'm... (3 Replies)