lsdev.1m (2010 09)

l
lsdev(1M) lsdev(1M)
NAME
lsdev - list device drivers in the system
SYNOPSIS
/usr/sbin/lsdev
[-h][-d driver  -C class ][
-b block_major ][-c char_major ][-e major]
[major ... ]
DESCRIPTION
The
lsdev command lists, one pair per line, the major device numbers and driver names of device
drivers configured into the system and available for invocation via special files. A
−1 in either the block
or character column means that a major number does not exist for that type.
If no arguments are specified,
lsdev
lists all drivers configured into the system.
If the
-h option is specified,
lsdev will not print a heading. This option may be useful when the output
of
lsdev will be used by another program.
The
-d, -C, -b,
-c, and -e options are used to select specific device drivers for output. If more than one
option is specified, all drivers that match the criteria specified by those options will be listed. These
search options are divided into two types: name search keys (the
-d and -C options) and major number
search keys (the
-b, -c, and
-e options). If both types of options are present, only entries that match
both types are printed. The same type of option may appear more than once on the command line with
each occurrence providing an ORing effect of that search type. The
-d and -C
options may not be
specified at the same time.
The ability to process major arguments is provided for compatibility and functions like the
-e option.
Options
-C class List device drivers that match class .
-d driver List device drivers with the name driver .
-b block_major List device drivers with a block major number of block_major .
-c char_major List device drivers with a character major number of char_major .
-e major List device drivers with either a character major number or block major equal
to major.
DIAGNOSTICS
Invalid combination of options
The -d and -C options may not be specified at the same time.
Invalid major number
A major number is malformed or out of range.
EXAMPLES
To output entries for all drivers in the
pseudo class:
lsdev -C pseudo
To output entries that are in the class disk that have either a block or character major number of 0:
lsdev -C disk -e 0
To get the character major number of my_driver into a shell environment variable:
C_MAJOR=$(lsdev -h -d my_driver | awk ’{print $1}’)
WARNINGS
Some device drivers available from the system may be intended for use by other drivers. Attempting to
use them directly from a special file may produce unexpected results.
A driver may be listed even when the hardware requiring the driver is not present. Attempts to access a
driver without the corresponding hardware will fail.
lsdev only lists drivers that are configured into the currently executing kernel. For a complete list of
available drivers, please run sam (see sam(1M).
HP-UX 11i Version 3: September 2010 − 1 − Hewlett-Packard Company 1