02-11-2004
10 More Discussions You Might Find Interesting
1. Programming
1 . Thanks everyone who reads the post .
2 . I want to know where can I download POSIX standard ,because I want to migrate my programe from Linux to ohter platform . (1 Reply)
Discussion started by: chenhao_no1
1 Replies
2. BSD
Hi! Everybody%)
I got a question like this: Does my FreeBSD5.1 support Posix queues.
Thanks! (7 Replies)
Discussion started by: kamazi
7 Replies
3. Programming
HI,
When i am configuring php in SUN Solaris. I am getting the below error.
configure: error: Your system seems to lack POSIX threads.
Do i need to install POSIX? If so can somebody let me know where can i download POSIX for Solaris 8?
Thanks, (2 Replies)
Discussion started by: Krrishv
2 Replies
4. Programming
Hi all
How i can create thread in SUSPENDED mode, and resume when i want.
I have win code with CreateThread (parameter CREATE_SUSPEND), and Resume Thread, but on POSIX with pthread i cant do it.
Please help me.
Best regards
// Kolesar (5 Replies)
Discussion started by: Kolesar
5 Replies
5. Shell Programming and Scripting
Hi there
how can i get the result of a command to not give me its error. For example, on certain systems the 'zfs' command below is not available, but this is fine becaues I am testing against $? so i dont want to see the message " command not found" Ive tried outputting to /dev/null 2>&1 to no... (5 Replies)
Discussion started by: hcclnoodles
5 Replies
6. What is on Your Mind?
Hi everybody,
i couldn't think of any better place to ask this question.
Does LINUX totally confirm with ALL of the POSIX standards??. If not which areas does it diverge??
my apologies if this questions seems sooo stupid to some of you..
thanks (0 Replies)
Discussion started by: abhiram7
0 Replies
7. Programming
Hi,
I am new to posix threads. The no of threads to be created depends on the runtime. If I get the number of threads,
I need to forward declare
pthread_t mythread;
how to do that can I use pointers and use malloc()??
I also have another question. The pthread_join is used to make... (0 Replies)
Discussion started by: brett01
0 Replies
8. UNIX for Dummies Questions & Answers
Hey, I'm completely new at this and I was wondering if there is a way that I would be able to redirect the log files in a directories standard output and standard error into and excel spreadsheet in anyway?
Please remember don't use too advanced of terminology as I just started using shell... (6 Replies)
Discussion started by: killaram
6 Replies
9. Shell Programming and Scripting
I need to run a cronjob and in the cronjob I execute a script that if there is an error produces standard error so I do
/RUNMYSCRIPT 2> mylogfile.log
However, if it runs correctly, I don't get a standard error output, I get a standard out output. How do I redirect both standard error and... (2 Replies)
Discussion started by: guessingo
2 Replies
10. UNIX for Advanced & Expert Users
Hi,
I have a VM with following configration .
3.10.0-693.1.1.el7.x86_64 #1 SMP Thu Aug 3 08:15:31 EDT 2017 x86_64 x86_64 x86_64 GNU/Linux
My current POSIX is :--
Your environment variables take up 2011 bytes
POSIX upper limit on argument length (this system): 2093093
POSIX smallest... (15 Replies)
Discussion started by: Abhayman
15 Replies
READ(2) System Calls Manual READ(2)
NAME
read, readn, write - read or write file
SYNOPSIS
#include <u.h>
#include <libc.h>
long read(int fd, void *buf, long nbytes)
long readn(int fd, void *buf, long nbytes)
long write(int fd, void *buf, long nbytes)
DESCRIPTION
Read reads nbytes bytes of data from the offset in the file associated with fd into memory at buf. The offset is advanced by the number of
bytes read. It is not guaranteed that all nbytes bytes will be read; for example if the file refers to the console, at most one line will
be returned. In any event the number of characters read is returned. A return value of 0 is conventionally interpreted as end of file.
Readn is just like read, but does successive read calls until nbytes have been read, or a read system call returns a non-positive count.
Write writes nbytes bytes of data starting at buf to the file associated with fd at the file offset. The offset is advanced by the number
of bytes written. The number of characters actually written is returned. It should be regarded as an error if this is not the same as
requested.
SOURCE
/sys/src/libc/9syscall
/sys/src/libc/port/readn.c
SEE ALSO
intro(2), open(2), dup(2), pipe(2)
DIAGNOSTICS
These functions set errstr.
READ(2)