02-23-2009
This has been a problem with UNIX over time - different "parentage" of a unix system may mean using different system calls. There have been a lot of attempts to get past this problem. POSIX (or SUSVn - the Single UNIX Specification Version nn) is one.
I would try this link here on the forums:
https://www.unix.com/unix-ieee-std-10...html#post26442
Note - POSIX does not attempt to deal with any implementation specifics, it just says this function() will do this. If you stick with POSIX as much as possible, porting is much less of a problem. It does not make it go away altogether.
VxWorks is a realtime system - I do not think POSIX will help that much - but I do not know VxWorks.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi there,
I just want to know what is the best DVD-writer & software I can use is PC, but I want to be able to read it from Unix. I tried to burn a DVD from my friend DVD-writer, when I try to read it in Unix the name of the file all mixed up. I'm not that familiar with DVD standard and which... (1 Reply)
Discussion started by: geoquest
1 Replies
2. Shell Programming and Scripting
Is there any site on Coding Standard for Shell Scripting in UNIX.
Please help me know!!!!!
Thanks
Om (1 Reply)
Discussion started by: Omkumar
1 Replies
3. Programming
Hi,
I am windows programer. I have very basic knowledge of Unix OS.
I have written an application in Windows which consists of Win32 API namely WideCharToMultiByte(..) and MultiByteToWideChar(..).
I am interested to deploy my application in unix platform henceforth I need to know IS... (1 Reply)
Discussion started by: dayakarr
1 Replies
4. Programming
Is it not a healthy practice to mix C and C++ standard I/O functions together
e.g.
string name; // this is a declared instance of the string class in C++
printf("\nPlease enter your name: ");
cin >> name;
I did something similar in a program Im designing, and used it several... (1 Reply)
Discussion started by: JamesGoh
1 Replies
5. UNIX for Dummies Questions & Answers
Hi All,
i have two functions in my script.
question()
{
num=`ps -e | grep ps | awk -F" " '{print $1}'`
qno=`expr $num % 10`
grade=grade1
cat grade1/$qno
answer ${grade} ${qno}
}
answer()
{
grade=$1
qno=$2
ansno=`wc -l $grade/ans/$qno | cut -d' ' -f1`
j=0
while
do (1 Reply)
Discussion started by: Usha Shastri
1 Replies
6. Shell Programming and Scripting
Hi Guys,
Is there a way to write a recursive function in unix?
Thanks for your help in advance,
Regards,
Magesh. (1 Reply)
Discussion started by: mac4rfree
1 Replies
7. 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
8. AIX
Unix 64bit AIX v6.1 standard edition
what do you mean ? function ?
pls, help me... (1 Reply)
Discussion started by: khanhphv
1 Replies
9. Shell Programming and Scripting
I have 7 functions those need to be executed as command line inputs, I tried with below code it’s not executing function. If I run the ./script 2 then fun2 should execute , how to initiate that function I tried case and if else also, how to initiate function from command line
if
then... (8 Replies)
Discussion started by: saku
8 Replies
10. Programming
Can someone outline the "best practice" (if any!) to handle newline in ANSI-C standard library functions?
I had some confusion with these functions recently related to char array and char pointer.
puts(), printf(), strcpy(), strncpy(), memset().
I seem to understand their basic use, but got... (6 Replies)
Discussion started by: yifangt
6 Replies
TIMES(P) POSIX Programmer's Manual TIMES(P)
NAME
times - write process times
SYNOPSIS
times
DESCRIPTION
The times utility shall write the accumulated user and system times for the shell and for all of its child processes, in the following
POSIX locale format:
"%dm%fs %dm%fs
%dm%fs %dm%fs
", <shell user minutes>,
<shell user seconds>, <shell system minutes>,
<shell system seconds>, <children user minutes>,
<children user seconds>, <children system minutes>,
<children system seconds>
The four pairs of times shall correspond to the members of the <sys/times.h> tms structure (defined in the Base Definitions volume of
IEEE Std 1003.1-2001, Chapter 13, Headers) as returned by times(): tms_utime, tms_stime, tms_cutime, and tms_cstime, respectively.
OPTIONS
None.
OPERANDS
None.
STDIN
Not used.
INPUT FILES
None.
ENVIRONMENT VARIABLES
None.
ASYNCHRONOUS EVENTS
Default.
STDOUT
See the DESCRIPTION.
STDERR
The standard error shall be used only for diagnostic messages.
OUTPUT FILES
None.
EXTENDED DESCRIPTION
None.
EXIT STATUS
Zero.
CONSEQUENCES OF ERRORS
Default.
The following sections are informative.
APPLICATION USAGE
None.
EXAMPLES
$ times
0m0.43s 0m1.11s
8m44.18s 1m43.23s
RATIONALE
The times special built-in from the Single UNIX Specification is now required for all conforming shells.
FUTURE DIRECTIONS
None.
SEE ALSO
Special Built-In Utilities
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. 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 Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE
/The Open Group 2003 TIMES(P)