topic Re: Submit Very Basic System administration commands and win easily points in Operating System - HP-UX

Submit Very Basic System administration commands and win easily points

Santhosh.H — Wed, 16 Jan 2002 04:49:09 GMT

Suchas stopping service, disabling service, booting in single user mode, taking a backup, shutdown, rebooting, changing init levels, crash recovery, going into GSP etc

Re: Submit Very Basic System administration commands and win easily points

Santhosh.H — Wed, 16 Jan 2002 04:56:23 GMT

to change init level
#init 1--4
to go into GSP
#^B
to come out of GSP
GSP>co
to reset the system in case of hang
GSP>rs

Re: Submit Very Basic System administration commands and win easily points

Scott Van Kalken — Wed, 16 Jan 2002 05:22:26 GMT

reset a hung GSP without rebooting

stty +resetGSP

helped me a few times.

Re: Submit Very Basic System administration commands and win easily points

Animesh Chakraborty — Wed, 16 Jan 2002 06:24:38 GMT

See the attachment

Re: Submit Very Basic System administration commands and win easily points

Animesh Chakraborty — Wed, 16 Jan 2002 06:38:32 GMT

basic lvm command attached.

Re: Submit Very Basic System administration commands and win easily points

Justo Exposito — Wed, 16 Jan 2002 08:13:30 GMT

Hi,

Commands for cluster:
cmhaltpkg pkgname (shutdown the package)
cmrunpkg -v -n nodename pkgname (startup the package)
cmviewcl (Show the status for package)
cmviewcl -v (Show detailed statusby package)

Regards,

Justo.

Re: Submit Very Basic System administration commands and win easily points

Paula J Frazer-Campbell — Wed, 16 Jan 2002 08:23:06 GMT

Good Morning to all

FLASHING ATTENTION LIGHT :-

From a console session, login and press CRTL.

Enter sl (Show Logs)from the command line e.g. GSP> sl

You will be prompted to select the logs you wish to view, select "e" for the error logs.

View the error logs.

Enter q from the command line to end the session.

Enter "co" to return to the console.

The attention light should now be off.

Paula

Re: Submit Very Basic System administration commands and win easily points

Justo Exposito — Wed, 16 Jan 2002 08:23:58 GMT

Hi,

Very important and simple, to do a make recovery tape:
/opt/ignite/bin/make_recovery -ACv

Regards,

Justo.

Re: Submit Very Basic System administration commands and win easily points

Michael Tully — Wed, 16 Jan 2002 08:36:00 GMT

Hi,

Trusting and on-trusting a system.

# /usr/lbin/tsconvert (to trust)
# /usr/lbin/tsconvert (to untrust)

When trusting a system make sure that
the users know that they will need to
change their passwords.

To administer a trusted system:

# /usr/lbin/modprpw -k
(this will unlock an account)

See the man pages in the attached
thread....

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x98153d853cd9d5118ff40090279cd0f9,00.html

-Michael

Re: Submit Very Basic System administration commands and win easily points

Stefan Farrelly — Wed, 16 Jan 2002 08:36:55 GMT

Quick and easy way to check if your server just rebooted itself or crashed due to a hardware problem;

cd /var/tombstones
grep chassis $(ls | tail -1)

If it says; No HPMC chassis codes logged

Then no hardware problem. If there are some hex numbers there then you need to pass them to HP to check what hardware caused the problem.

Re: Submit Very Basic System administration commands and win easily points

Justo Exposito — Wed, 16 Jan 2002 08:44:16 GMT

Hi Again,

Go to single user mode:

shutdown (without prameters)

Regards,

Justo.

Re: Submit Very Basic System administration commands and win easily points

Kenny Chau — Wed, 16 Jan 2002 08:45:58 GMT

umount /dev/vg00/lvol1
lvextend -L larger_size /dev/vg00/lvol1
extendfs -F hfs /dev/vg00/rlvol1
mount /dev/vg00/lvol1 mount_directory

Hope this helps.
Kenny.

Re: Submit Very Basic System administration commands and win easily points

Steven Sim Kok Leong — Wed, 16 Jan 2002 10:29:52 GMT

Hi,

# sam -r

Allows you to easily restrict users in the execution of commands with root privileges.

Hope this helps. Regards.

Steven Sim Kok Leong

Re: Submit Very Basic System administration commands and win easily points

Justo Exposito — Wed, 16 Jan 2002 10:29:56 GMT

Hi,

To run a script in background mode:

myscript &
nohup myscript &

Regards,

Justo.

Re: Submit Very Basic System administration commands and win easily points

Andreas D. Skjervold — Wed, 16 Jan 2002 10:46:42 GMT

Hi

Before crash!:
- /opt/ignite/bin/make_recovery -AvC
(C option to create config file used to check wether new make_recovery has to be run)
-/opt/ignite/bin/check_recovery

After crash:
- replace root disk
- insert recovery tape in drive
- boot system
- Interupt boot sequence and boot from tape
- Choose "Install HP-UX" to get things back, or "Advanced options" if you want to make filsystem changes etc.

And you are fit to go.

Andreas

Re: Submit Very Basic System administration commands and win easily points

Justo Exposito — Wed, 16 Jan 2002 12:12:43 GMT

Hi,

Basic commands to copy files and directories to a tape:
fbackup/frestore
tar
cpio
dd

Basic commands for compress/uncompress files and directories:
gzip
compress/uncompress
pack/unpack
zcat

Commands for translate from ascii dos format to Unix format and viceversa:
dos2ux
ux2dos

Commands to transfer files between boxes:
ftp
rcp
remsh hostname cat file > file

Regards,

Justo.

Re: Submit Very Basic System administration commands and win easily points

Bill McNAMARA_1 — Wed, 16 Jan 2002 12:12:56 GMT

easier way to find if your system rebooted or paniced:

tail -20 /etc/shutdownlog

Other things:
-------------

# ioscan -fnk

is much much faster (and more than likely what you want to do) than a full ioscan -fn

# nettladm

Nice graphical interface to nettl subsystem logging.

/usr/sbin/remove_patches

is quite useful when short on disk space.

# mstm (or xstm)
are nice ways to check hardware paths and test hardware.

Later,
Bill

Re: Submit Very Basic System administration commands and win easily points

nancy rippey — Wed, 16 Jan 2002 12:36:21 GMT

ls -lq (long listing that will also show unprintable characters

A good way to find 'garbage' characters in an ascii file is to use 'ed'. When in the editor ',l' will produce the entire file with all unprintable characters, '.l' will give you a line at a time.

Re: Submit Very Basic System administration commands and win easily points

harry d brown jr — Wed, 16 Jan 2002 13:23:25 GMT

find / -type f -size -1000000c -exec grep -il somesting {} \;

live free or die
harry

Re: Submit Very Basic System administration commands and win easily points

Jeff Machols — Wed, 16 Jan 2002 14:00:43 GMT

if a file is not a text file

# strings file

this will give you list off man readable strings, good for core files, lvmtab...