Submit Very Basic System administration commands and win easily points

[Rita C Workman]

Don't know if anyone has posted this..so if it's a duplicate 'Sorry'

My favorite thing is to fix the .profile of 'challenging' users.

vi /home/user/.profile

As the last two lines I add

/dir/
exit

So when these 'challenging' users login the only app they need automatically runs...and when they exit the job...they are automatically logged out of system....Ahhhh!! Yup, 2 little lines I have come to love.

Rgrds,
Rita

[u856100]

To push an existing UNIX process into the background ONCE it has started :

# z (in the inception shell)
# bg (pushes program to background)

Now the shell can be utilised again

cheers
John

[K.Vijayaragavan.]

Simple command to take print in network printers?

#hpnpf -n -x file

-vijay

[Kristopher March]

insf - used to install special files in device directory.
*helpful when one of our fddi lan cards suddenly dissapeared.

[mahmoud fayed]

Hi,
#ioscan -fnC disk -> to know physical disk h/w pth and status(claimed or not)
#strings /var/adm/wtmp -> to read wtmp bin file
#fuser -ku /dev/vgxx/filesystems -> to kill all user using that filesystem

To build a new kernel after modification done by SAM UX 11.0:
1-#cd /stand
2-#cp /stand/system /stand/system.prev
3-#cp /stand/build/system.sam /stand/system
4-#kmupdate /stand/build/vmunix_test
5-#shutdown -rn

[James George_1]

To supersede the patch level ( To save space on /var or /var/adm/...)

# cleanup -cx ( where x is the run level, eg: 2,3,4 ..)

# /usr/sbin/syslogd start ( If syslog daemon is not running )

# To change the hernel configurations..

# Edit the system file
# mk_kernel -s /stand/system -o /stand/vmunix.new
# kmupdate /stand/vmunix.new

James

[Steve Steel]

catman -w

-w

Causes only the /usr/share/lib/whatis database to be created. No manual reformatting is done.

man -k keyword

All man pages with keyword in title

text manpages
man $*|sed -e 's/_^H//g' -e 's/^H.//g'|pg


Steve Steel

[Josh_13]

this one will show you everything in one particular logical volum group. it's good for cleaning up say /

du -x /


i needed this when i found that i had root at 98% full and was trying to find out why.
worked really well. i found a rather lagre file in dev that was 69% of the used space.

[Justo Exposito]

NAME
nohup - run a command immune to hangups

SYNOPSIS
nohup command [arguments]

DESCRIPTION
nohup executes command with hangups and quits ignored.

It's very usefull if you use it with & (background jobs).

Regards,

Justo.

[K.Vijayaragavan.]

Here is one more command that i got from forum itself,

#graphinfo

to display the graphics configuration details including the extensions loaded and support informations.

-Vijay

[Xavier Gutierrez]

Hi, all

Copying a filesystem's structure and files to another filesystem before the disk it resides in dies completely:

cd
find . -depth -print | cpio -pd


After disk HW replacement:

vgcfgrestore -n vgxx /dev/rdsk/c?t?d?
vgchange -a y vgxx (-a e if in cluster environment)
newfs -F /dev/vgxx/rlvoly (for each lvol in the disk)
mount (+options)
cd
find . -depth -print |cpio -pd

That's it

Regards,

Xavier

[Josh_13]

Xavier : doesn't cp miss things like symbolic links? i was once told that by someoen that knows unix systems much better than i. as a result, if i'm copying a directory or structure i do one of the following:

1: (transfer a directory)
cd /
tar -cf - | (cd ; tar -xf -)

is optional if you want to move to another host for the backup

is the absolute path of the directory you want to backup to.



2: (back up a directory)
tar -cf -c

is the absolute path of the file being created

is the directory you want to back up



3: (disk slice image)
dump 0f - /old | (cd /new restore -rf -)

/old is the (absolute path of the) directory being transfered (in this case temporarily backed up)

/new is where you're moving it to (absolute path)


if i feel that the information is critical to the computer running i use the second method there so that i can keep the tar file until the transfer has been proven successful. this allows restoring to be faster since i don't have togo to the site's tape backup, which could have beome impossible depending on the directory moved.

[Kenny Chau]

To view the priority of the process:

ps -el |more

To change the relative priority:

nice - command

To change the real-time priority:

rtprio command


Regards,
Kenny.

[Maurice Skubski]

check if a OVO agent is running on the system:
----------------------------------------------
> opcagt -status
or
> /opt/OV/bin/OpC/opcagt exist?

check which templates are enabled / disabled:
---------------------------------------------
> opctemplate -l

find the Managementserver:
--------------------------
> more /opt/OV/bin/OpC/opcinfo

in this file you can also enable the trace option.

;)

[Robert Gamble]

Bounce back to the top ...

[pap]

to increase the filesystem size on a system running OnlineJFS.

lvextend /dev/vgXX/lvolX

fsadm -F vxfs -b XXXXXXX

b=1024 x filesystem size in MB.

-pap

[PIYUSH D. PATEL]

To make a mirror of root vg

1. pvcreate -b /dev/rdsk/c1t2d0 ( root mirror )
2. vgextend /dev/vg00 /dev/rdsk/c1t2d0
3. mkboot /dev/rdsk/c1t2d0
4. mkboot -a "hpux -l q (;0)/vmunix" /dev/rdsk/c1t2d0

5.lvextend -m 1 /dev/vg00/lvol1 /dev/dsk/c1t2d0
lvextend -m 1 /dev/vg00/lvol3 /dev/dsk/c1t2d0
lvextend -m 1 /dev/vg00/lvol2 /dev/dsk/c1t2d0

6. lvlnboot -b /dev/vg00/lvol1
lvlnboot -v -r /dev/vg00/lvol3
lvlnboot -s /dev/vg00/lvol2

7. lvlnboot -R
8. lvlnboot -v

Thats it..
Your root mirror is created.

Piyush

[steven Burgess_2]

Hi

Perl example

For bdf usage ( filesystems above 80% )

bdf -l | perl -ne '/(\d+)%/&&$1>80&&print'

Finding deadlinks

find -type l -print | perl -nle '-e || print'

If you can't readily tell which directory has the growing file, try this:

find / -type d -xdev | xargs du -sk >file1
sort -k2,2 file1 >sorted1

Wait awhile (30 minutes?)

find / -type d -xdev | xargs du -sk >file2
sort -k2,2 file2 >sorted2
join -j 2 sorted1 sorted2 >file3

file3 will be formatted as:
directory firstsize secondsize

Simply look for large discreprencies between the first and second sizes to narrow down to a directory. Then you can hopefully identify the file.

Steve

[George_Dodds]

To check if a system is trusted run :-

usr/lbin/getprdef

You'll either get message 'system is not trusted'
or a return code 2 if it is.

Cheers

George

[kish_1]

hello
How to give name to terminal
echo "^[]0;babu^G"

How to find out file system is supported large file system

fsadm -F vxfs /mountarea

[H.Merijn Brand (procura]

Make kmtune output usable with attached perl script

[John Carr_2]

Hi

stop internet services deamon

inetd -k

this will stop hosts connecting through ftp, rcp , remsh , rlogin and telnet.

start it up again with inetd -c

John.

[Simon Wickham_1]

Checkeing Processes :
ps -ef | grep "name of process" | awk ' { printf "Process id = %s Parent Process id = %s\n", $2, $3 }'

ps -ef | grep -v grep | grep | awk '{print $2,$3}'

ps -ef aux |head -10



Example :
We will look here at the syslog daemon :
ps -ef | grep "syslogd" | awk ' { printf "Process id = %s Parent Process id = %s\n", $2, $3 }'
Process id = 303 Parent Process id = 1
Process id = 2105 Parent Process id = 2074

Note :
The higher number is the child and the lower the parent pid number.

[John Carr_2]

Hi

changing file ownerships

chown username filename

changing group ownership

chgrp groupname filename

changing group and username in one go

chown groupname:username filename

John.

[Anonymous]

To get a shell prompt indicating user, host and working directory {may leave out the $(echo .*) }
add to $HOME/.profile:
export PS1=$(whoami)@$(hostname)$(echo "\033[7m")['${PWD##*/}']$(echo "\033[0m ")

More about what sh can do for you in
man sh-posix

To leave a footprint in /var/adm/syslog/syslog.log
logger "the message goes here"

To monitor in syslog what values vhand sees
vhandinfo on
(see script attached)

Document your systems while they are running eg with cfg2html
http://groups.yahoo.com/group/cfg2html/