Category Archives: AIX LESSONS

Subsystem Resource Controller (SRC)

Objectives  Purpose of SRC Parts of SRC Commands involved in SRC Purpose of SRC  A set of commands that make it very easy for the system administrators to maintain and manage the subsystems and subservers running on the system . … Continue reading

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AIX Commands Related to Boot and Init Process

1) To find the run-level in which system is working a) #who -r b) cat /etc/.init.state 2) To change the runlevel from one to other #telinit  M  or shutdown -m  –> Go to maintenance mode (single user mode) #telinit 2 … Continue reading

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/etc/inittab explanation

/etc/inittab file init:2:initdefault: brc::sysinit:/sbin/rc.boot 3 >/dev/console 2>&1 # Phase 3 of system boot powerfail::powerfail:/etc/rc.powerfail 2>&1 | alog -tboot > /dev/console # Power Failure Detection mkatmpvc:2:once:/usr/sbin/mkatmpvc >/dev/console 2>&1 atmsvcd:2:once:/usr/sbin/atmsvcd >/dev/console 2>&1 Inittab file lists the process that init starts, and it … Continue reading

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AIX Startup Modes

Startup Modes There are usually 4 startup modes available in AIX, they are Normal, SMS, Maintenance and Diagnostics. Normal System at a working stage Multi-User mode All process are up and running. It show login screen to logon to the … Continue reading

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AIX BOOT PROCESS

System Startup Procedure There are 3 Phases involved in AIX startup procedure, they are i) ROS (Read Only Storage) Phase ii) Device Configuration Phase iii) Init Phase ROS (Read Only Storage) Phase i) Hardware devices are verified and checked for … Continue reading

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