8/8/2019 Aix x Sysadmin

1/2

oslevel Reports the latest installed maintenance level of the system.

oslevel -r : determines the highest recommended maintenance level reached for the current version

of AIX.

oslevel -lr 5100-04: lists which fileset updates are missing if after installing ML 04 on 5100-03 the

command oslevel -r still shows 5100-03.

alog Creates and maintains fixed-size log files.alog -o -t boot : view the boot log (the log that holds boot information).

alog -L : lists the logs defined in the alog database.

errpt Generates a report of logged errors in the system error log.

errpt -a : displays a complete detailed report.

errpt -c > /dev/console : formats and displays each of the errors at logtime (concurrent error

logging) on /dev/console.

errdemon Starts the error logging daemonerrdemon that reads error records from the /dev/error file and

creates error log entries in the default system error log /var/adm/ras/errlog.

/usr/lib/errdemon : starts the error logging daemon.

/usr/lib/errdemon -l : displays the path to the system error log file and error log size./usr/lib/errdemon -s 2000000 : changes the maximum size of the error log file to 2 MB.

yslogd The syslogd daemon logs messages from kernel, daemons and system applications using

/etc/syslog.conf.

*.debug errlog (add this line to to syslog.conf to redirect all syslog messages to the system error

log).

stopsrc -s syslogd : stops the syslogd daemon.

startsrc -s syslogd : starts the syslogd daemon.

refresh -s syslogd : refreshes the syslogd daemon.

errlogger Logs an operator message.

errlogger new disk added on scsi1 adapter : logs new disk added on scsi1 adapter in the systemerror log.

errclear Deletes entries from the system error log. Software and operator errors (older than 30 days) and

hardware errors (older than 90 days) are removed using crontab.

errinstall Installs or replaces messages in the error logging message sets of the error log message catalog.

errupdate Updates the Error Record Template Repository (default file /var/adm/ras/errtmplt).

diag Menu driven program to run a wide choice of tasks and service aids (diagnostics, hardware error

report, format, microcode and bootlist management, ).

Diagnostics modes:

Concurrent mode: diag is used during normal operation (only devices not in use can be tested).

Single-user mode: run diag aftershutdown -m.Stand-alone mode: boot from Diagnostics CD (press F5 when acoustic beep is heard)

orboot and press F6 when acoustic beep is heard to load diag from hard disk.

ifdiag returns diag is not supported on this model use:

SMS mode: boot and press F1 when acoustic beep is heard, select test the computer. Some older

models use a SMS diskette.

alt_disk_install Installs an alternate disk with a mksysb install image or clones the currently running system to an

alternate disk.

Note: install bos.alt_disk_install fileset to use alt_disk_install.

alt_disk_install -C hdisk2 : Clones the current rootvg to hdisk2.

alt_disk_install -C -b update_all -l /dev/cd0 hdisk4 : Creates clone of the current rootvg on hdisk4,

installs a ML on the clone and changes the bootlist to hdisk4.alt_disk_install -X old_rootvg : Removes the original rootvg from the ODM, after booting from the

new alternate disk (you can still reboot from old_rootvg).

nimadm Performs Alternate Disk Migration (to a new version or release) of AIX using NIM resources.

http://wu%28%27oslevel%27%29/http://wu%28%27alog%27%29/http://wu%28%27errpt%27%29/http://wu%28%27errdemon%27%29/http://wu%28%27errdemon%27%29/http://wu%28%27errdemon%27%29/http://wu%28%27syslogd%27%29/http://wu%28%27syslogd%27%29/http://sysfile%28%27syslog.conf%27%29/http://wu%28%27errlogger%27%29/http://wu%28%27errclear%27%29/http://wu%28%27errinstall%27%29/http://wu%28%27errupdate%27%29/http://wu%28%27diag%27%29/http://wu%28%27alt_disk_install%27%29/http://wu%28%27nimadm%27%29/http://wu%28%27oslevel%27%29/http://wu%28%27alog%27%29/http://wu%28%27errpt%27%29/http://wu%28%27errdemon%27%29/http://wu%28%27errdemon%27%29/http://wu%28%27syslogd%27%29/http://wu%28%27syslogd%27%29/http://sysfile%28%27syslog.conf%27%29/http://wu%28%27errlogger%27%29/http://wu%28%27errclear%27%29/http://wu%28%27errinstall%27%29/http://wu%28%27errupdate%27%29/http://wu%28%27diag%27%29/http://wu%28%27alt_disk_install%27%29/http://wu%28%27nimadm%27%29/

8/8/2019 Aix x Sysadmin

2/2

http://wu%28%27sysdumpdev%27%29/http://wu%28%27dumpcheck%27%29/http://wu%28%27kdb%27%29/http://wu%28%27snap%27%29/http://wu%28%27snapcore%27%29/http://wu%28%27shconf%27%29/http://wu%28%27bosboot%27%29/http://wu%28%27mklv%27%29/http://wu%28%27lslv%27%29/http://wu%28%27mkboot%27%29/http://wu%28%27chpv%27%29/