Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

select(3p) [posix man page]

SELECT(3P)						     POSIX Programmer's Manual							SELECT(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
select -- synchronous I/O multiplexing SYNOPSIS
#include <sys/select.h> int select(int nfds, fd_set *restrict readfds, fd_set *restrict writefds, fd_set *restrict errorfds, struct timeval *restrict timeout); DESCRIPTION
Refer to pselect(). COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 SELECT(3P)

Check Out this Related Man Page

STAT(3P)						     POSIX Programmer's Manual							  STAT(3P)

PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond- ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME
stat -- get file status SYNOPSIS
#include <sys/stat.h> int stat(const char *restrict path, struct stat *restrict buf); DESCRIPTION
Refer to fstatat(). COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 7, Copyright (C) 2013 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Stan- dard is the referee document. The original Standard can be obtained online at http://www.unix.org/online.html . Any typographical or formatting errors that appear in this page are most likely to have been introduced during the conversion of the source files to man page format. To report such errors, see https://www.kernel.org/doc/man-pages/reporting_bugs.html . IEEE
/The Open Group 2013 STAT(3P)
Man Page

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Select ALL in VI Editor

Hi all, How can i select all and copy text in VI Editor. Rakesh Gupta (22 Replies)
Discussion started by: rakish
22 Replies

2. Shell Programming and Scripting

remove files other than selected

I wanna remove a set files other than some selected files. Eg. :rolleyes::rolleyes::rolleyes: a directory contains n files like test1.dat test2.dat test3.dat test4.dat out5.dat out1.dat i wanna remove all files which doesnot name like *test* I want to use this in shell... (22 Replies)
Discussion started by: freakygs
22 Replies

3. Shell Programming and Scripting

On how to select the right tool for a given task

edit by bakunin: I have split the thread to reflect the two different themes it had. Read the original thread here. All the other posts there dealing with the new theme have been moved here, the ones which addressed both i have copied and edited. Enjoy the discussion. BTW, you don't want to... (29 Replies)
Discussion started by: cfajohnson
29 Replies

4. Shell Programming and Scripting

How to redirect value from sql select statment to unix variable

Hi, I need to get the value from the table using the sql command and store this value into the unix variable so that i can use this value for furthure use.. Please can any body help me in this regards Thanks & Regards Abdul Hafeez Shaik (17 Replies)
Discussion started by: abdulhafeez
17 Replies

5. UNIX for Dummies Questions & Answers

selective concatenation of rows & columns

Dear unix gurus, I have a data file that looks something like this ... x y x y x y x y x y 0 3836 30 3915 60 5984 90 7388 120 8385 150 9038 180 9453 210 9745 240 9906 270 9962 300 9953 330 9915 350 9887 ... (22 Replies)
Discussion started by: tintin72
22 Replies

6. Shell Programming and Scripting

Select record with MAX value in MySQL

Hi there, I have trouble selecting record that contain one biggest value for a group of other values. I mean, this is my table: mysql> SELECT * FROM b; +----+------+-------+ | id | user | value | +----+------+-------+ | 1 | 1 | 100 | | 3 | 1 | 150 | | 5 | 1 | 300 | | 6... (20 Replies)
Discussion started by: chebarbudo
20 Replies

7. Programming

sockets - can you send data while waiting on select()

Hey guys, Is it possible to have a worker thread send data out a TCP connection while another thread is waiting using using select() on that same connection? If not, then what is the correct way to maintain a connection, react to incoming data, and send data over a TCP connection? Thanks... (16 Replies)
Discussion started by: scubanarc
16 Replies

8. Shell Programming and Scripting

Select everything between first and last occurrence of same pattern

Greetings, I am writing a script which requires as a part, selecting all the lines between the first and last occurrence of a pattern. I have an nawk alternative that is working. But thre should be a generic script that should run on all os viz, linux, sun , aix. The awk script that i... (25 Replies)
Discussion started by: usha rao
25 Replies

9. Shell Programming and Scripting

How to use select into command in shell script?

I need to get total number of rows in a table by using select count(*) from table and need to assign into a variable in shell script. I used the following script, it does return the number of rows but also with oracle headers, Please help me to eliminate this headers. Shell Script #!/bin/sh... (16 Replies)
Discussion started by: vel4ever
16 Replies

10. Shell Programming and Scripting

AWK script - extracting min and max values from selected lines

Hi guys! I'm new to scripting and I need to write a script in awk. Here is example of file on which I'm working ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00 ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00 ATOM 4690 CD ... (18 Replies)
Discussion started by: grincz
18 Replies

11. UNIX for Dummies Questions & Answers

Turning to SED to select specific records

Hi All, I am looking for a simple concise solution most likely using sed to process the following 4 rows of data from the same record and only keeps it if the second record satisfy certain critea such as surname matches up to smith or jackson: John (firstname) Smith (surname) ... (21 Replies)
Discussion started by: gjackson123
21 Replies

12. Shell Programming and Scripting

Randomly selecting sequences and generating specific output files

I have two files containing hundreds of different sequences with the same Identifiers (ID-001, ID-002, etc.,), something like this: Infile1: ID-001 ATGGGAGCGGGGGCGTCTGCCTTGAGGGGAGAGAAGCTAGATACA ID-002 ATGGGAGCGGGGGCGTCTGTTTTGAGGGGAGAGAAGCTAGATACA ID-003... (18 Replies)
Discussion started by: Xterra
18 Replies

13. Shell Programming and Scripting

Format of 'select' generated menu

Oracle Linux 5.6 64-bit Given the below snippet ORACLE_SID='' PS3='Select target (test) database being refreshed: ' # while ]; do select ORACLE_SID in `egrep -i '^FS|^HR' /etc/oratab |\ awk -F\: '{print $1}'|sort` ; do if ]; then echo echo "Please enter a... (19 Replies)
Discussion started by: edstevens
19 Replies

14. Shell Programming and Scripting

How to remove spaces from a file selectively?

Hi i have a file in which i am doing some processing. The code is as follows: #!/bin/ksh grep DATA File1.txt >> File2.txt sed 's/DATA//' File2.txt | tr -d ‘ ‘ >> File4.xls As you can see my output is going in a xl file.The output consist of four columns/feilds out of which the first... (20 Replies)
Discussion started by: Sharma331
20 Replies

15. Shell Programming and Scripting

Selective printing based on matched record

Hi, I have file with thousands of lines somewhat similar to the below 6 lines 06MXXXXXXXXXXXXXXXX 0328 003529 J27300022 MICROSOFT *MSN 06<1 000000001344392 JPN151-85830 MSBILL.INFO F 06<A17087454000328651551 MSBILL.INFO ... (16 Replies)
Discussion started by: dsid
16 Replies