08-17-2005
Command to find 32/64 bit in Linux
Hi,
Can somebody tell me which command will help me find whether the OS is 32 bit or 64 bit.
Regards,
Giridhara Babu Tadikonda.
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FFS(3P) POSIX Programmer's Manual FFS(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
ffs - find first set bit
SYNOPSIS
#include <strings.h>
int ffs(int i);
DESCRIPTION
The ffs() function shall find the first bit set (beginning with the least significant bit) in i, and return the index of that bit. Bits are
numbered starting at one (the least significant bit).
RETURN VALUE
The ffs() function shall return the index of the first bit set. If i is 0, then ffs() shall return 0.
ERRORS
No errors are defined.
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
The Base Definitions volume of IEEE Std 1003.1-2001, <strings.h>
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 FFS(3P)