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 5.10 10 Sep 2004 select.h(3HEAD)
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spawn.h(3HEAD) Headers spawn.h(3HEAD)NAME
spawn.h, spawn - spawn
SYNOPSIS
#include <spawn.h>
DESCRIPTION
The <spawn.h> header defines the posix_spawnattr_t and posix_spawn_file_actions_t types used in performing spawn operations.
The <spawn.h> header defines the flags that can be set in a posix_spawnattr_t object using the posix_spawnattr_setflags() function:
POSIX_SPAWN_RESETIDS
POSIX_SPAWN_SETPGROUP
POSIX_SPAWN_SETSCHEDPARAM
POSIX_SPAWN_SETSCHEDULER
POSIX_SPAWN_SETSIGDEF
POSIX_SPAWN_SETSIGMASK
Inclusion of the <spawn.h> header can make visible symbols defined in the <sched.h>, <signal.h>, and <sys/types.h> headers.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO sched.h(3HEAD), semaphore.h(3HEAD), signal.h(3HEAD), types.h(3HEAD), attributes(5), standards(5)SunOS 5.10 10 Sep 2004 spawn.h(3HEAD)
Hi,
I have a file which contains the following :
select * from test where test_id=1;
select id
from test1, test2 where test_id=1 and test_id=2;
select * from
test1, test2, test3 where test_id=4 and test2_id where in (select test2_id from test2);
select
id1, id2 from test ... (6 Replies)
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)
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)
i'm doing a simple program in socket programming on c i have server that can handle 2clients in a single machine i'm running ubuntu linux so i got it work but the probelm when clients send a message the server will echo it but i cant distinguish which client send the message client 1 or client... (7 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)
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)