lsattr Command

Purpose

Displays attribute characteristics and possible values of attributes for devices in the system.

Syntax

lsattr { -D [ -O ] | -E [ -O ] | -P [ -O ] | -F Format [ -Z Character ] } -l Name [ -a Attribute ] ...[ -f File ] [ -h ] [ -H ]

lsattr { -D [ -O ] | -F Format [ -Z Character ] } { [ -c Class ] [ -s Subclass ] [ -t Type ] } [ -a Attribute ] ... [ -f File ] [ -h ] [ -H ]

lsattr -R { -l Name | [ -c Class ] [ -s Subclass ] [ -t Type ] } -a Attribute [ -f File ] [ -h ] [ -H ]

lsattr -l Name { -o operation [ ... ] } -F Format [ -Z Character ] [ -f File ] [ -h ] [ -H ]

lsattr { [ -c Class ] [ -s Subclass ] [ -t Type ] } { -o operation [ ... ] } -F Format [ -Z Character ] [ -f File ] [ -h ] [ -H ]

Description

The lsattr command displays information about the attributes of a specific device or type of device. If you do not specify the device logical name with the -l Name flag, you must use a combination of one or all of the -c Class, -s Subclass, and -t Type flags to uniquely identify the predefined device.

You must specify one of the following flags with the lsattr command:

Item	Description
-D	Displays default values.
-E	Displays effective values (valid only for customized devices that are specified with the -l flag).
-F Format	Specifies the user-defined format.
-P	Displays device values when the device was last configured.
-R	Displays the range of legal values.

When you display the effective values of the attributes for a customized device, the information is obtained from the Configuration database, not the device. The database values reflect how the device is configured unless it is reconfigured with the chdev command by using the -P or -T flag. If the reconfiguration occurs, the information that is displayed by the lsattr command might not correctly indicate the current device configuration until after the next system boot.

If you use the -D or -E flag, the output defaults to the values for the attribute's name, value, description, and user-settable strings, unless it is also used with the -O flag.

The -P flag displays the attribute values when the device was last configured, or before modifying any of its attributes by using the chdev command with the -P or -T flag.

The -O flag displays the names of all the attributes that are specified, separated by colons. On the next line, the -O flag displays all of the corresponding attribute values, separated by colons. The -H flag can be used with either the -D, -E, or -F flag to display headers above the column names. You can define the format of the output with a user-specified format by using the -F Format flag, where the Format parameter is a quoted list of column names, separated by non-alphanumeric characters or white space. If the -F Format flag is specified, the -Z Character flag can also be specified to change the default record separator from a newline character to the indicated Character.

The lsattr command can display "operation" information from the Extended Predefined Attribute (PdAtXtd) object class. The operation information is accessed through the -o operation flag. The -o operation flag and the -a attribute flag cannot be specified in the same invocation of the lsattr command. The -o operation flag is also not valid with the -R flag. When the -o operation flag is specified, only fields from the PdAtXtd object class can be specified with the -F Format flag.

You can supply the flags either on the command line or by using the specified -f File flag.

Flags

Item	Description
-a Attribute	Displays information for the specified attributes of a specific device or type of device. You can use one -a flag for each attribute name or multiple attribute names. If you use one -a flag for multiple attribute names, the list of attribute names must be enclosed in quotation marks with spaces between the names. If you use the -R flag, you must specify only one -a flag with only one attribute name. If you do not specify either the -a or -R flag, the lsattr command displays all information for all attributes of the specified device. The -a Attribute flag cannot be used with the -o Operation flag. This combination of flags causes the lsattr command to exit with an error message.
-c Class	Specifies a device class name. This flag can be used to restrict the output to devices of a specified class. This flag cannot be used with the -E or -l flag.
-D	Displays the attribute names, default values, descriptions, and user-settable flag values for a specific device when it is not used with the -O flag. The -D flag displays only the attribute name and default value in colon format when it is used with the -O flag. This flag can be used with any combination of the -c, -s, and -t flags that uniquely identifies a device from the Predefined Devices object class, or with the -l flag. This flag cannot be used with the -E, -F, or -R flag.
-E	Displays the attribute names, current values, descriptions, and user-settable flag values for a specific device when it is not used with the -O flag. The -E flag displays only the attribute name and current value in colon format when it is used with the -O flag. This flag cannot be used with the -c, -D, -F, -R, -s, or -t flag.
-f File	Reads the necessary flags from the File parameter.
-F Format	Displays the output in a user-specified format, where the Format parameter is a quoted list of column names separated by nonalphanumeric characters or white space. If white space is used as the separator, the lsattr command displays the output in aligned columns. Only column names from the Predefined Attributes (PdAt), Customized Attributes (CuAt), and the Extended Predefined Attributes (PdAtXtd) object classes can be specified. In addition to the column names, there are two special purpose names that can be used: the name description can be used to obtain a display of attribute descriptions and user_settable can be used to determine whether an attribute can be changed. This flag cannot be used with the -E, -D, -O, or -R flag.
-H	Displays headers above the column output. The -O and -R flags take precedence over the -H flag.
-h	Displays the command usage message.
-l Name	Specifies the device logical name in the Customized Devices object class whose attribute names or values you want displayed.
-o Operation	Displays information for the specified operations of a specific device or type of device. You can use one -o flag for each operation name or multiple operation names. If you use one -o flag for multiple operation names, the list of operation names must be enclosed in quotation marks with spaces between the names. Wildcard characters can also be used for the operation name. The valid set of wildcard characters is the same set that is used by the odmget command. All operations that are associated with a specific device, or type of device, can be displayed by using an operation value of `"?"`. The -o Operation* flag cannot be used with the -a attribute flag or the -R flag. Any combination of these flags causes the lsattr command to exit with an error message.
-O	Displays all attribute names separated by colons and on the second line, displays all the corresponding attribute values separated by colons. The attribute values are current values when the -E flag is specified and default values when the -D flag is specified. This flag cannot be used with the -F and -R flags.
-P	Displays the attribute names, values, descriptions, and user-settable flag values for a specific device when it is not used with the -O flag. The values that are displayed are those values with which the device was configured, before any of the device attributes were modified by using the chdev command with the -P or -T flag. When the -P flag is used with the -O flag, the -P flag displays only the attribute name and value in colon-separated format. This flag can be used with any combination of the -c, -s, and -t flags that uniquely identifies a device from the Predefined Devices object class, or with the -l flag. This flag cannot be used with the -D, -E, -O, or -R flag.
-R	Displays the legal values for an attribute name. The -R flag cannot be used with the -D, -E, -F and -O flags, but can be used with any combination of the -c, -s, and -t flags that uniquely identifies a device from the Predefined Devices object class, or with the -l flag. The -R flag displays the list attribute values in a vertical column as follows: `Value1 Value2 . . ValueN` The -R flag displays the range attribute values as `x...n(+i)` where `x` is the start of the range, `n` is the end of the range, and `i` is the increment.
-s Subclass	Specifies a device subclass name. This flag can be used to restrict the output to that for devices of a specified subclass. This flag cannot be used with the -E or -l flag.
-t Type	Specifies a device type name. This flag can be used to restrict the output to that for devices of a specified class. This flag cannot be used with the -E or -l flag.
-Z Character	The -Z Character flag is used with programs that must deal with ODM fields that might have embedded new line characters. The -Z Character flag is used to change the record separator character for each record, or line, of output generated. The new record separator is specified by using the Character argument to this flag. The -Z Character flag is only relevant when the -F Format flag is specified. The -Z Character flag cannot be used with the -D, -E, -O, or -R flag.

Security

Attention RBAC users and Trusted AIX users: This command can perform privileged operations. Only privileged users can run privileged operations. For more information about authorizations and privileges, see Privileged Command Database in Security. For a list of privileges and the authorizations associated with this command, see the lssecattr command or the getcmdattr subcommand.

Examples

To list the current attribute values for the rmt0 tape device, enter the following command:

lsattr -l rmt0 -E

The system displays a message similar to the following output:

mode          yes   Use DEVICE BUFFERS during writes     True
block_size    1024  BLOCK size (0=variable length)       True
extfm         yes   Use EXTENDED file marks              True
ret           no    RETENSION on tape change or reset    True
density_set_1 37    DENSITY setting #1                   True
density_set_2 36    DENSITY setting #2                   True
compress      yes   Use data COMPRESSION                 True
size_in_mb    12000 Size in Megabytes                    False
ret_error     no    RETURN error on tape change or reset True

To list the default attribute values for the rmt0 tape device, enter the following command:

lsattr -l rmt0 -D

The system displays a message similar to the following output:

mode          yes   Use DEVICE BUFFERS during writes     True
block_size    1024  BLOCK size (0=variable length)       True
extfm         yes   Use EXTENDED file marks              True
ret           no    RETENSION on tape change or reset    True
density_set_1 37    DENSITY setting #1                   True
density_set_2 36    DENSITY setting #2                   True
compress      yes   Use data COMPRESSION                 True
size_in_mb    12000 Size in Megabytes                    False
ret_error     no    RETURN error on tape change or reset True

To list the current value of the bus_intr_lvl attribute for the scsi0 SCSI adapter, enter the following command:
```
lsattr -l scsi0 -a bus_intr_lvl -E
```
The system displays a message similar to the following output:
```
bus_intr_lvl 1 Bus interrupt level False
```
To list the possible values of the login attribute for the tty0 tty device, enter the following command:
```
lsattr -l tty0 -a login -R
```
The system displays a message similar to the following output:
```
enable
disable
share
delay
```

To list the default attribute values for an IBM® 4340 parallel printer, enter the following command:

lsattr -c printer -s parallel -t ibm4340 -D

The system displays a message similar to the following output:

ptop       600       Printer TIME OUT period                    True
line       60        Number of LINES per page                   True
col        80        Number of COLUMNS per page                 True
ind        0         Number of columns to INDENT                True
plot       no        Send all characters to printer UNMODIFIED  True
backspace  yes       Send BACKSPACES                            True
cr         yes       Send CARRIAGE RETURNS                      True
form       yes       Send FORM FEEDS                            True
lf         yes       Send LINE FEEDS                            True
addcr      yes       Add CARRIAGE RETURNS to LINE FEEDS         True
case       no        Convert lowercase to UPPERCASE             True
tabs       yes       EXPAND TABS on eight position boundaries   True
wrap       no        WRAP CHARACTERS beyond the specified width True
mode       no        Return on ERROR                            True
interface  standard  Type of PARALLEL INTERFACE                 True
autoconfig available STATE to be configured at boot time        True
busy_delay 0         Microseconds to delay between characters   True

To list the possible values of the ptop attribute for an IBM 4340 parallel printer, enter the following command:
```
lsattr -c printer -s parallel -t ibm4340  -a ptop -R
```
The system displays a message similar to the following output:
```
1...1000 (+1)
```
To list the current attribute values for the rmt0 tape device in colon-separated format, enter the following command:
```
lsattr -l rmt0 -E -O
```
The system displays a message similar to the following output:
```
#mode:block_size:extfm:ret:density_set_1:density_set_2:compress:size_in_mb:ret_error
yes:1024:yes:no:37:36:yes:12000:no
```

To display system attributes, enter the following command:

lsattr -E -l sys0

The system displays output similar to the following output:

keylock      normal        State of system keylock at boot time              False
maxbuf       20            Maximum number of pages in block I/O BUFFER CACHE True
maxmbuf      0             Maximum Kbytes of real memory allowed for MBUFS   True
maxuproc     128           Maximum number of PROCESSES allowed per user      True
autorestart  false         Automatically REBOOT system after a crash         True
iostat       false         Continuously maintain DISK I/O history            True
realmem      4194304       Amount of usable physical memory in Kbytes        False
conslogin    enable        System Console Login                              False
fwversion    IBM,SPH00221  Firmware version and revision levels              False
maxpout      0             HIGH water mark for pending write I/Os per file   True
minpout      0             LOW water mark for pending write I/Os per file    True
fullcore     false         Enable full CORE dump                             True
pre430core   false         Use pre-430 style CORE dump                       True
ncargs       256           ARG/ENV list size in 4K byte blocks               True
rtasversion  1             Open Firmware RTAS version                        False
modelname    IBM,7044-270  Machine name                                      False
systemid     IBM,011037D1F Hardware system identifier                        False
boottype     disk          N/A                                               False
SW_dist_intr false         Enable SW distribution of interrupts              True
cpuguard     disable       CPU Guard                                         True
frequency    93750000      System Bus Frequency                              False

Note: The same information is available in a more readable format by using SMIT. Select the System Environments -> Change / Show Characteristics of Operating Systems options to view this information.

Files

Item	Description
/usr/sbin/lsattr	Contains the lsattr command.