07-21-2004
There are several different drivers in a system. For example if your system has a disk drive and tape drive, there would be one driver for the disk and another driver for the tape drive. Each driver gets a number called the major number. The major number just tells the kernel which driver to use.
The minor number is passed to the driver. The driver could ignore it. Or the driver can interpret any way it wants. Usually there are sub fields in the minor number. In the case of a tape driver, one sub field would say which particular tape drive to use. Another sub field might say whether or not to automatically rewind the tape when the file is closed.
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1. Programming
To further my fledgling knowledge of C, I am re-writing some of the Unix command set. My current command is an ls-style command.
All works well, except for device files. How do I get the major/minor numbers for the dev files?
I see from the stat struct there are st_rdev and st_dev members. Do... (1 Reply)
Discussion started by: zazzybob
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2. Shell Programming and Scripting
would like to order this input based on major.minor.release AND build number
Label abc_def_0.0.3_build_999 2008/08/01 'Created by me.'
Label abc_def_0.0.9_build_1000 2008/08/01 'Created by me.'
Label abc_def_9.0.9_build_10001 2008/08/01 'Created by me.'
Label abc_def_10.9.100_build_2... (4 Replies)
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3. Solaris
Hi
Does anyone know what the major and minor numbers are in Solaris? (2 Replies)
Discussion started by: wisdom
2 Replies
4. AIX
Good evening ...
does anyone of you know how to change major/minor numbers of disk devices ?
I had to migrate from raid1 to raid5 and this messed up my ASM cluster - I know which devices should have which IDs to match the content - but I have no idea how to change it.
Any help would be... (2 Replies)
Discussion started by: zxmaus
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5. AIX
Difference between Major and Minor in AIX (5 Replies)
Discussion started by: AIXlearner
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6. Programming
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/termios.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <sys/mkdev.h>
int
main(int argc, char *argv)
{
int i;
struct stat buf;
... (4 Replies)
Discussion started by: konvalo
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7. Shell Programming and Scripting
Hi,
I have line like this :
proj_name/module/trunk/module_1_0
where the first "1" refers to major version and second "0" refers to minor version.
any AWK or command like that so that I can filter out the major and minor ?
like major= command | input line
minor= command |... (4 Replies)
Discussion started by: bhaskar_m
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8. Solaris
Hi friends, Please let me know if there is any way to find out Major and Minor numbers of virtual file system like below:
/devices 0K 0K 0K 0% /devices
ctfs 0K 0K 0K 0% /system/contract
proc 0K 0K ... (8 Replies)
Discussion started by: nitj
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9. Shell Programming and Scripting
I want to remove all rows with a minor repeating count less than 30% compared to the major repeating count from my table. The values of a col(starting col 2) can assume is A,T,G,C and N. Each row has at least 2 values and at most 4 repeating values(out of ATGC).
N is considered a missing value... (12 Replies)
Discussion started by: newbie83
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mknod(1M) System Administration Commands mknod(1M)
NAME
mknod - make a special file
SYNOPSIS
mknod name b major minor
mknod name c major minor
mknod name p
DESCRIPTION
mknod makes a directory entry for a special file.
OPTIONS
The following options are supported:
b Create a block-type special file.
c Create a character-type special file.
p Create a FIFO (named pipe).
OPERANDS
The following operands are supported:
major The major device number.
minor The minor device number; can be either decimal or octal. The assignment of major device numbers is specific to each system. You
must be the super-user to use this form of the command.
name A special file to be created.
USAGE
See largefile(5) for the description of the behavior of mknod when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
ftp(1), in.ftpd(1M), mknod(2), symlink(2), attributes(5), largefile(5)
NOTES
If mknod(2) is used to create a device, the major and minor device numbers are always interpreted by the kernel running on that machine.
With the advent of physical device naming, it would be preferable to create a symbolic link to the physical name of the device (in the
/devices subtree) rather than using mknod.
SunOS 5.10 16 Sep 1996 mknod(1M)