machstat Command

Purpose

Reports the value of the first 4 bits of the power status register.

Syntax

machstat { -p | -f }

Description

The machstat command returns the value of a status register. There is no standard output or error except when using the -f flag on CHRP hardware.

Flags

Item Description
-f On non-CHRP machines, returns Power Status Register bits 10–13. On CHRP machines, displays the EPOW status, EPOW modifier, and, if present, EPOW version.
-p Returns the first 4 bits of the power status register.

Exit Status

The machstat command returns a value of 255 if an error occurs. Otherwise it returns the value of the register.

Security

Access Control: root only

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 that are associated with this command, see the lssecattr command or the getcmdattr subcommand.

Examples

To see the current value of the power status register, enter:

machstat -p
echo $?

Files

Item Description
/etc/rc.powerfail Shuts down a system when a power failure is detected