07-19-2011
what do I start learning Unix or Linux then ..?? Just confused.
8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I want replace 2.6.15-25-server with 2.6.17 ?
$uname -r
2.6.15-25-server
1) mv /bin/uname /bin/uname.orig
2) put the following in the new /bin/uname:
#!/bin/sh
echo Uname (New Version)
/bin/uname.orig
:confused: (3 Replies)
Discussion started by: pop_black
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2. AIX
hi ,
i have made a mistake :( on the production enviourment by change tha host name .
after that i returned back the old name.
but i think this will not afeect the system until reboot the machine.
laso i tried to telnet the syetem by the host name not by the IP address and it works fine.
... (2 Replies)
Discussion started by: habuzahra
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3. Linux
what is the difference between
uname -m and uname -i
what it actually means (2 Replies)
Discussion started by: Dileepsp
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4. Shell Programming and Scripting
I want use fake uname
anyone can guide? (9 Replies)
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5. AIX
hi freinds recently i have change hostname node as using uname -s ******* but next time i saw the name using uname -n the name did t changed is that i have to reboot the system (4 Replies)
Discussion started by: senmak
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6. Solaris
hi all,
Operating System Name : Unix Sun Solaris
Operating system release level : 5.10
Operating system version : Generic_137111-06
i know the release level that is kernel version
Generic_137111-06 what is number... (6 Replies)
Discussion started by: coxmanchester
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7. UNIX for Advanced & Expert Users
Using the command :
echo $eup_terminal_code | tr -s 'mil vrn qcm' 'mci pql qcm'
it works,but this translation changes depending on the system.
I'd like to define the following variables ,one for each system :
mil22h_from='mil vrn frl'
mil22h_to='mci vci fci'
... (4 Replies)
Discussion started by: Pierluigi.sala
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8. Solaris
bssmsrv223:/ 53 ] uname -a
SunOS bssmsrv223 5.10 Generic_118833-36 sun4u sparc SUNW,Sun-Fire-V245
bssmsrv223:/ 54 ]
what does 118833-36 denotes in Generic_118833-36 (2 Replies)
Discussion started by: hiten.r.chauhan
2 Replies
LEARN ABOUT REDHAT
mincore
MINCORE(2) Linux Programmer's Manual MINCORE(2)
NAME
mincore - get information on whether pages are in core
SYNOPSIS
#include <unistd.h>
#include <sys/mman.h>
int mincore(void *start, size_t length, unsigned char *vec);
DESCRIPTION
The mincore function requests a vector describing which pages of a file are in core and can be read without disk access. The kernel will
supply data for length bytes following the start address. On return, the kernel will have filled vec with bytes, of which the least signif-
icant bit indicates if a page is core resident.
For mincore to return successfully, start must lie on a page boundary. It is the caller's responsibility to round up to the nearest page.
The length parameter need not be a multiple of the page size. The vector vec must be large enough to contain length/PAGE_SIZE bytes. One
may obtain the page size from getpagesize(2).
RETURN VALUE
On success, mincore returns zero. On error, -1 is returned, and errno is set appropriately.
ERRORS
EAGAIN kernel is temporarily out of resources
EINVAL start is not a multiple of the page size, or len has a non-positive value
EFAULT vec points to an invalid address
ENOMEM address to address + length contained unmapped memory, or memory not part of a file.
BUGS
mincore should return a bit vector and not a byte vector. As of Linux 2.4.5, it is not possible to gain information on the core residency
of pages which are not backed by a file. In other words, calling mincore on an region returned by an anonymous mmap(2) does not work and
sets errno to ENOMEM. Unless pages are locked in memory, the contents of vec may be stale by the time they reach userspace.
CONFORMING TO
mincore does not appear to be part of POSIX or the Single Unix Specification.
HISTORY
The mincore() function first appeared in 4.4BSD.
AVAILABILITY
Since Linux 2.3.99pre1 and glibc 2.2.
SEE ALSO
getpagesize(2), mmap(2)
Linux 2.4.5 2001-06-03 MINCORE(2)