Full Discussion: Linux 32bit or 64bit
Operating Systems Linux Linux 32bit or 64bit Post 302135407 by porter on Sunday 9th of September 2007 04:37:37 AM
Old 09-09-2007
If you have gcc installed then compile a trivial "Hello World" program with the "-m64" option, and see if it runs.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

32bit vs 64bit

Whats the difference between 32bit and 64bit OS's or applications. I understand it a little but its just not clicking the way the teacher explained to me thanks, any info would be much appreciated (1 Reply)
Discussion started by: eloquent99
1 Replies

2. UNIX for Dummies Questions & Answers

64bit- or 32bit- processor

when using the command : cat /proc/cpuinfo I get some basic info back on the cpu.. but it doesn't tell me if I am using a 64 or 32 bit processor .. a) is this the right command to find this ? b) if it is not what is ? and how do I get that information.. thanx moxxx68 (2 Replies)
Discussion started by: moxxx68
2 Replies

3. Linux

Linux version v.s. 32bit/64bit

Where can I get a list that maps the each Linux version to corresponding 32/64 bits model? e.g. OS -> Model (ILP32, LP64, ...) RHLE3 -> ? RHLE4 -> ? RHLE5 -> ? ... It would be better if there is such a list that contains most of current UNIX OS versions. ... (1 Reply)
Discussion started by: princelinux
1 Replies

4. Programming

32bit to 64bit conversion.

Is there an 'easy' way to convert 32Bit code to 64Bit code. I have this benchmark i need to run on different machines and it would be nice if i could run it on the 64 bit machines ass wel. The output when compiling(1) and running(2) are the following: (1) linux:/home/user1/subbench/heapsort #... (7 Replies)
Discussion started by: demuynckr
7 Replies

5. Solaris

32bit / 64bit issue with x86 solaris

i have solaris 10 x86 64bit installed on my pc (dell 3100). i then decided to move my hard drive to another pc (dell 4600). I noticed that each time i boot up, the OS show as 32 bit (instead of 64bit) and i can't even get past this stage to the login page. when i moved it back to dell 3100 it... (13 Replies)
Discussion started by: seyiisq
13 Replies

6. Red Hat

32bit Linux vs 64 bit Linux

Friends , Would u plz tell me what is the difference between 32-bit Linux o/s and the 64 bit Linux o/s . Is there any RAM limitation in this two types of o/s . Waiting for kind reply ... ... (7 Replies)
Discussion started by: shipon_97
7 Replies

7. Red Hat

Pthread problems, 32bit vs 64bit

I have an application which builds and executes without error on a 32bit implementation of Linux. When I transferred the code to a new project on a 64bit implementation, the code will build without error, but the pthread functions, such as pthread_attr_setschedparam() return an 'Invalid Argument'... (3 Replies)
Discussion started by: jpelletier116
3 Replies

8. Solaris

Compiler - 32bit or 64bit?

Hi Gurus, I need to check whether the compiler installed in my system supports 64bit compilation. Server - Sun fire v490 OS - Solaris 5.9 Processor - Sparcv9 (64bit) Install Directory - /opt/SUNWSpro Compiler Model - Sun Forte C Compiler. My development team is claiming that there... (20 Replies)
Discussion started by: Hari_Ganesh
20 Replies

9. Linux

Need assistance to enable more that 4GB RAM on Linux 32Bit OS.

How to enable more than 4GB RAM support on Linux 32bit OS? OS: CentOS release 5.4 (Final) Kernel version: 2.6.18-53.el5 Arch: 32Bit I got solution at Innovationframes.com • View topic - How to enable more than 4GB RAM support on Linux 32bit OS? but my question is the steps given... (5 Replies)
Discussion started by: chandranjoy
5 Replies

10. Shell Programming and Scripting

maintain 32bit and 64bit C code

Hi, I have a C code which builds and works fine on 32bit linux machine. Now i want to convert that code to build and run on 64 bit linux machine. I dont want to maintain two separate sources for 32 and 64 bit build. Same source should get build on 32 as well as 64 bit machine (when a... (2 Replies)
Discussion started by: bhushan123
2 Replies
PCRESAMPLE(3)						     Library Functions Manual						     PCRESAMPLE(3)

NAME
PCRE - Perl-compatible regular expressions PCRE SAMPLE PROGRAM
A simple, complete demonstration program, to get you started with using PCRE, is supplied in the file pcredemo.c in the PCRE distribution. A listing of this program is given in the pcredemo documentation. If you do not have a copy of the PCRE distribution, you can save this listing to re-create pcredemo.c. The program compiles the regular expression that is its first argument, and matches it against the subject string in its second argument. No PCRE options are set, and default character tables are used. If matching succeeds, the program outputs the portion of the subject that matched, together with the contents of any captured substrings. If the -g option is given on the command line, the program then goes on to check for further matches of the same regular expression in the same subject string. The logic is a little bit tricky because of the possibility of matching an empty string. Comments in the code explain what is going on. If PCRE is installed in the standard include and library directories for your operating system, you should be able to compile the demon- stration program using this command: gcc -o pcredemo pcredemo.c -lpcre If PCRE is installed elsewhere, you may need to add additional options to the command line. For example, on a Unix-like system that has PCRE installed in /usr/local, you can compile the demonstration program using a command like this: gcc -o pcredemo -I/usr/local/include pcredemo.c -L/usr/local/lib -lpcre In a Windows environment, if you want to statically link the program against a non-dll pcre.a file, you must uncomment the line that defines PCRE_STATIC before including pcre.h, because otherwise the pcre_malloc() and pcre_free() exported functions will be declared __declspec(dllimport), with unwanted results. Once you have compiled and linked the demonstration program, you can run simple tests like this: ./pcredemo 'cat|dog' 'the cat sat on the mat' ./pcredemo -g 'cat|dog' 'the dog sat on the cat' Note that there is a much more comprehensive test program, called pcretest, which supports many more facilities for testing regular expres- sions and the PCRE library. The pcredemo program is provided as a simple coding example. If you try to run pcredemo when PCRE is not installed in the standard library directory, you may get an error like this on some operating systems (e.g. Solaris): ld.so.1: a.out: fatal: libpcre.so.0: open failed: No such file or directory This is caused by the way shared library support works on those systems. You need to add -R/usr/local/lib (for example) to the compile command to get round this problem. AUTHOR
Philip Hazel University Computing Service Cambridge CB2 3QH, England. REVISION
Last updated: 17 November 2010 Copyright (c) 1997-2010 University of Cambridge. PCRESAMPLE(3)

Featured Tech Videos

All times are GMT -4. The time now is 01:17 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy