EXTRA - OTHERS

+OTHERS:


CHECKSUM:

sum <file>            do a checksum using byte-by-byte algorithm (downloaded firmware or HMC update iso images need this)
csum -h SHA1 <file>   do a checksum using sha1 hash algorithm (HMC upgrade network install images need this)
csum -h MD5 <file>    do a checksum using md5 hash algorithm

------------------------------

EXTENDED HISTORY:

vi /etc/profile:

export EXTENDED_HISTORY=ON
alias history='fc -lt'

------------------------------

EXTENDED HISTORY SEPARATELY FOR EACH USER:


HISTSIZE = Maximum size of the history file
HISTFILE = Location/filename used to record commands executed.


vi /etc/profile:

### Secondary Logging Start ###
if tty >/dev/null 2>&1
then
  From="`/usr/bin/who am i | awk '{ print $1 }'`"
  To="`/usr/bin/whoami | awk '{ print $1 }'`"
  File="$From:$To:$(date +'%Y%m%d%H%M%S')"
  if [ ! -d /var/adm/history/$To ]
        then
        mkdir -p /var/adm/history/$To
        chmod 700 /var/adm/history/$To
  fi

  export HISTFILE=/var/adm/history/$To/.sh_history.$File
  export EXTENDED_HISTORY=ON
  export HISTSIZE=10000
  export HISTDATEFMT=%d-%m-%y.%H:%M:%S

### Secondary Logging End ###

------------------------------

PORTMIR:

man portmir
who am i
ps -ef|grep sshd
portmir -t /dev/pts/1
df -k
portmir -o

------------------------------

BLINKING AN HDISK:

1.diag
2.Task Selection
4.Hot Plug Task
5.SCSI and SCSI RAID Hot Plug Manager (or: SCSI Hot Swap Manager)
6.Identify a Device Attached to a SCSI Hot Swap Enclosure Device
(select the hdisk you want to identify)

If you can't find the hdisk by the code numbers:
diag
Diagnostic Routines
System Verification

This is the output:
 hdisk0           P2/Z1-A8             16 Bit SCSI Disk Drive (9100 MB)
 hdisk1           P2/Z1-A9             16 Bit SCSI Disk Drive (9100 MB)

------------------------------

AUDIT:

should be in inittab
the command: audit, will lists posiible parameters
audit start| shutdown

------------------------------

GPFS:

lsitab -a|grep mm
man mmshutdown
mmlscluster
ps -ef|grep mm
cd /var/adm/ras
ls -ltr|grep mm
more mmfs.log.latest
mmlsnsd
mmlscluster


------------------------------

RAMDISK:

root@aix21h27c: /etc # lsitab -a | grep ram
ramdisk:2:once:/etc/rc.ramd > /dev/console 2>&1 # Create ramdisk


root@aix21: /etc # cat rc.ramd
#!/usr/bin/ksh

/usr/sbin/rmramdisk /dev/rramdisk0
/usr/sbin/mkramdisk 400M

/usr/bin/echo yes | /sbin/helpers/jfs2/mkfs -V jfs2 -o log=INLINE /dev/ramdisk0
/usr/sbin/mount -V jfs2 -o log=/dev/ramdisk0,cio /dev/ramdisk0 /homes/P02/pci
...

------------------------------

ISO IMAGE CREATION:

mkdvd -r /directory -S        <--it will create image from the whole directory in /mkcd/cd_images filesystem (rename file to ...iso)
mkdvd -V rootvg -R -S         <--create an mksysb in an iso fromat from rootvg

After iso image has been removed from /mkcd/cd_images filesystem, this filesystem can be deleted.

 ------------------------------

ISO IMAGE MOUNTING (AIX 6.1 TL4):

# loopmount -i cdrom.iso -o "-V cdrfs -o ro" -m /mnt        <--mounts an iso image
(It creates a loopback device if not specified. If you give -l then you must specify a looback device name (loop0, loop1...)

# loopumount -l loop0 -m /mnt/dvd                           <--umounts an iso image and removes loopback device

An image file can be associated with only 1 loopback device.


1320-003 loopmount: Specified loopback device is not found in ODM

If no loopback devices are present on the system you must create one:

# lsdev -C | grep loop                                      <--checking for loopback device availability
# mkdev -c loopback -s node -t loopback                     <--createing a looback device

------------------------------

ISO IMAGE MOUNTING (AIX 5.3):
e.g. we have a file in /tmp called aix_5.iso which is 370MB

1. identify the nearest multiple of 128 MB that will provide enough space for the image. In this case it is 384MB
2. mklv -y cdlv -s n -L /dev/cdlv rootvg 384M hdisk0        <--create a logical volume with 384MB
(If the command fails, increase the volume size by a multiple of 128.)
3. dd if=/tmp/aix_5.iso of=/dev/cdlv                        <--copying the files in the ISO to disk
(This command may take a long time and will create two dd processes.)
4. mount -v cdrfs -o ro /dev/cdlv /mnt/iso                  <--mount the device like a CD-ROM

------------------------------