Answer me first before log a call

While waiting for the explorer data. I would like to understand:
1) When you first discover the amber light is on?
2) Is there any software installation/maintenance been performed recently?
3) Is there any hardware installation/maintenance been performed recently?
4) Is there any recent power failure?
5) What action you have tried to troubleshoot?
6) Do you notice any other abnormal situation (e.g. daemon down, network not working, etc)? Or the server still running as usual?

Thank you.

Linux - Enable root passwd

from : http://www.ubuntugeek.com/enable-and-disable-ubuntu-root-password.html


If you want to enable root account (which is not recommended) enter the following command.

$sudo passwd root

This will prompt for a new root password and once you confirm it, you can start using the root account to login.

If you want to disable root account in ubuntu you need to lock the root account by using the following command

$sudo passwd -l root

If you want to work on a root console you’d better use the following command

$sudo -i

Picasa login failed - Network

http://www.google.com/support/forum/p/Picasa/thread?tid=6eb9c7d06d5aa10c&hl=en

Find out dual, quad or eight cores cpu on Sun M5000

# kstat cpu_info | grep core_id

Fedora 13 - Install printer Canon LBP3050

How to install printer Canon LBP3050 in Fedora 13
------------------------------------------------------

1. Download driver from http://support-my.canon-asia.com/contents/MY/EN/0900772407.html

2. root# gunzip CAPT_Printer_Driver_for_Linux_V200_uk_EN.tar.gz

3. root# tar -xvf CAPT_Printer_Driver_for_Linux_V200_uk_EN.tar

4. root# cd CAPT_Printer_Driver_for_Linux_V200_uk_EN/Driver/RPM

5. root# rpm -i cndrvcups-common-2.00-2.i386.rpm

6. root# rpm -i cndrvcups-capt-2.00-2.i386.rpm

7. root# vi /etc/ccpd.conf


DevicePath /dev/usb/lp0


8. root# /etc/init.d/cups restart

9. root# lpadmin -p LBP3050 -m CNCUPSLBP3050CAPTK.ppd -v ccp:/var/ccpd/fifo0 -E

10. root# ccpdadmin -p LBP3050 -o /dev/usb/lp0

11. root# /etc/init.d/ccpd start

12. Done & try print any document

Broadband connection

Linux always recognize Huawei 3G modem as storage instead of modem, so need to use usb_modeswitch to switch it become a modem.

Solution :

vi /etc/usb_modeswitch.conf

change value

DisableSwitching=1

EnableLogging=1

save and exit

connect usb broadband modem

Linux - Mount ISO image automatically

vi /etc/fstab

[add this entry]

/home/image.iso /mnt/folder iso9660 loop,user,auto 0 0

[save and exit]

Solaris 10 - Zone installation

# zfs create poolForZones/zonesaya
# zfs set mountpoint=/zonesaya poolForZones/zonesaya
# zpool status -z
# chmod 700 /zonesaya
# zonecfg -z zonesaya
zonesaya: No such zone configured
Use 'create' to begin configuring a new zone.
zonecfg:zonesaya> create
zonecfg:zonesaya> set zonepath=/zonesaya
zonecfg:zonesaya> set autoboot=true
zonecfg:zonesaya> add net
zonecfg:zonesaya:net> set address=10.140.1.25
zonecfg:zonesaya:net> set physical=ce0
zonecfg:zonesaya:net> end
zonecfg:zonesaya> add fs
zonecfg:zonesaya:fs> set dir=/cdrom
zonecfg:zonesaya:fs> set special=/cdrom
zonecfg:zonesaya:fs> set type=lofs
zonecfg:zonesaya:fs> add options [ro,nodevices]
zonecfg:zonesaya:fs> end 
zonecfg:zonesaya> add dedicated-cpu
zonecfg:zonesaya:dedicated-cpu> set ncpus=3
zonecfg:zonesaya:dedicated-cpu> end
zonecfg:zonesaya> add capped-memory 
zonecfg:zonesaya:dedicated-cpu> set physical=1gb
zonecfg:zonesaya:dedicated-cpu> set swap=256gb
zonecfg:zonesaya:dedicated-cpu> set locked=256gb
zonecfg:zonesaya:dedicated-cpu> end
zonecfg:zonesaya> add fs
zonecfg:zonesaya:fs> set dir=/mnt
zonecfg:zonesaya:fs> set special=/dev/dsk/c0t0d0s2
zonecfg:zonesaya:fs> set raw=/dev/rdsk/c0t0d0s2
zonecfg:zonesaya:fs> set type=ufs
zonecfg:zonesaya:fs> add options [nodevices,logging]
zonecfg:zonesaya:fs> end
zonecfg:zonesaya> commit
zonecfg:zonesaya> verify
zonecfg:zonesaya> commit
zonecfg:zonesaya> exit
# zoneadm -z zonesaya install
# zoneadm -z zonesaya boot
# zlogin -C zonesaya


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

edit exist value:

zonecfg:my-zone> select rctl name=zone.cpu-shares
--------------------------------------------------------------

bash-3.00# dladm show-link
e1000g0 type: non-vlan mtu: 1500 device: e1000g0
e1000g1 type: non-vlan mtu: 1500 device: e1000g1
e1000g2 type: non-vlan mtu: 1500 device: e1000g2
e1000g3 type: non-vlan mtu: 1500 device: e1000g3
bash-3.00# dladm show-dev
e1000g0 link: up speed: 10 Mbps duplex: half
e1000g1 link: unknown speed: 0 Mbps duplex: half
e1000g2 link: unknown speed: 0 Mbps duplex: half
e1000g3 link: unknown speed: 0 Mbps duplex: half
---------------------------------------------------------------------
http://developers.sun.com/solaris/articles/application_in_zone.html

Solaris 10 - How to set Java Web Console

#svccfg -s svc:/system/webconsole setprop options/tcp_listen=true
#svcadm refresh svc:/system/webconsole
#smcwebserver stop
#smcwebserver start
#svcadm enable svc:/system/webconsole
#netstat -an | grep 6789
go to https://localhost:6789

Youtube -> MP3

http://www.dirpy.com

Zimbra mail server

root@abs-mail:~# more /etc/resolv.conf
search abs.com.my
nameserver localhost

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

root@abs-mail:~# more /etc/hosts

127.0.0.1 localhost.localdomain localhost
203.223.137.86 abs-mail.abs.com.my absmail

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

root@abs-mail:~# more /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface (DHCP)
#auto eth0
#iface eth0 inet dhcp

# The primary network interface (static)
auto eth0
iface eth0 inet static
address 203.223.137.86
netmask 255.255.255.128
network 203.223.137.0
broadcast 203.223.137.127
gateway 203.223.137.126
root@abs-mail:~#

Ubuntu - How to set DNS server

apt-get install bind9
/etc/init.d/bind9 stop

edit 3 files.

* /etc/bind/named.conf.local
* /etc/bind/named.conf.options
* /etc/resolv.conf

create 2 files.

* /etc/bind/zones/mydomain.com.db
* /etc/bind/zones/rev.0.168.192.in-addr.arpa
--------------------------------------------------------------------------------------------

vi /etc/bind/named.conf.local

# Our domain zone

zone "abs.com.my" {
type master;
file "/etc/bind/zones/abs.com.my.db";
};

# For reverse DNS
zone "137.223.203.in-addr.arpa" {
type master;
file "/etc/bind/zones/rev.137.223.203.in-addr.arpa";
};

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

vi /etc/bind/named.conf.options

options {
// directory "/var/named";
// dump-file "/var/named/data/cache_dump.db";
// statistics-file "/var/named/data/named_stats.txt";
directory "/var/cache/bind";

// If there is a firewall between you and nameservers you want
// to talk to, you might need to uncomment the query-source
// directive below. Previous versions of BIND always asked
// questions using port 53, but BIND 8.1 and later use an unprivileged
// port by default.

query-source address * port 53;

// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0's placeholder.

forwarders {
203.223.137.124;
};
// include "/etc/rndc.key";
// We are the master server for server.example.com


//zone "abs-mail.abs.com.my" {
// type master;
// file "abs-mail.abs.com.my";


// auth-nxdomain no; # conform to RFC1035
// listen-on-v6 { any; };
};

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

vi /etc/resolv.conf

search abs.com.my
nameserver localhost
nameserver 203.223.137.126
nameserver 210.19.197.110
nameserver 203.223.137.124
nameserver 203.121.65.30

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


mkdir /etc/bind/zones
vi /etc/bind/zones/mydomain.com.db
$TTL 3D
@ IN SOA abs-mail.abs.com.my. root (
2007062001
28800
3600
604800
38400
);

abs.com.my. IN NS abs-mail.abs.com.my.
abs.com.my. IN MX 10 abs-mail.abs.com.my.
abs-mail IN A 203.223.137.86

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

vi /etc/bind/zones/rev.137.223.203.in-addr.arpa

$TTL 3D
@ IN SOA abs-mail.abs.com.my. root (
2007062001
28800
604800
604800
86400
)
IN NS abs-mail.abs.com.my.
86 IN PTR abs-mail.abs.com.my.


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

/etc/init.d/bind9 restart

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

1. go to other computers, point it's dns server to this new dns server
2. open  terminal/cmd prompt

          dig jaring.my
        ; <<>> DiG 9.6.1-P2 <<>> jaring.my
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55222 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0 ;; QUESTION SECTION: ;jaring.my. IN A ;; ANSWER SECTION: jaring.my. 359962 IN A 192.228.128.20 ;; AUTHORITY SECTION: jaring.my. 86362 IN NS NS6.jaring.my. jaring.my. 86362 IN NS NS5.jaring.my. jaring.my. 86362 IN NS dns1.jaring.my. jaring.my. 86362 IN NS dns2.jaring.my. ;; Query time: 1 msec ;; SERVER: 203.223.137.86#53(203.223.137.86) ;; WHEN: Wed Jul 14 14:25:00 2010 ;; MSG SIZE rcvd: 117

nslookup jaring.my

Server: 203.223.137.86     <-------it's using new dns server  Address: 203.223.137.86#53 Non-authoritative answer: Name: jaring.my Address: 192.228.128.20

root--- jaring.my ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9011ms
rtt min/avg/max/mdev = 186.559/295.523/416.053/68.948 ms

:~# ping jaring.my -c 10
PING jaring.my (192.228.128.20) 56(84) bytes of data.
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=1 ttl=56 time=218 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=2 ttl=56 time=358 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=3 ttl=56 time=257 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=4 ttl=56 time=383 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=5 ttl=56 time=289 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=6 ttl=56 time=186 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=7 ttl=56 time=252 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=8 ttl=56 time=286 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=9 ttl=56 time=416 ms
64 bytes from dns2.jaring.my (192.228.128.20): icmp_seq=10 ttl=56 time=307 ms

--- jaring.my ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9011ms
rtt min/avg/max/mdev = 186.559/295.523/416.053/68.948 ms
root@fLufyz-laptop:~# 

done.

if error, check log file at  /var/log/syslog

Solaris - search installed package

#pkginfo | grep -i [package-name] 

eg.

#pkginfo | grep -i php

Solaris 10 - Backup using fssnap & ufsdump & ufsrestore

1. Create test folder to be backup
#mkdir -p /virtual-rmt/0/
#mkdir /backingstore
#mkdir /export/home/filetobackup
#cd /export/home/filetobackup
#mkfile -nv 100k file1.test file2.test file3.test file4.test


2. Take a snapshot of the file
#fssnap -F ufs -o bs=/backingstore /filetobackup


3. Backup the file#ufsdump 0uf /virtual-rmt/0 /dev/fssnap/0

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

to check the status of a snapshot:
#fssnap -i

to delete snapshot: 
#fssnap -d /dev/fssnap/0

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

to restore:

#rm -rf /export/home/filetobackup
#ls
#ufsrestore rvf /virtual-rmt/0/dump0

done

 

Solaris 10 - replace failed hardisk on mirror setting

#metastat
#metadb -d c0t1d1s7
#metadetach -f d40 d42
#metaclear -f d42
#cfgadm -al
#cfgadm -c unconfigure c1::dsk/c0t1d0

take out old disk
put in new disk

#cfgadm -c configure c1::dsk/c0t1d0
#format
#prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s - /dev/rdsk/c0t1d0s2
#metadb -a -c 2 c0t1d0s7
#metainit -f d42 1 1 c0t1d0s5
#metattach d40 d42
#metastat -p
#metadevadm -u c0t1d0

mount iso

#mkdir /tmp/syshandbook
#mount -o loop file1.iso /tmp/syshandbook
#ls /tmp/syshandbook

convert CD to ISO image

#unmount /dev/cdrom
#dd if=/dev/cdrom of=file.iso bs=1024

Solaris 10 - Add new hardisk

1. Add new hardisk
2. Boot up
3. #devfsadm
4. #format
5. #iostat -En (take note the new hardisk target address. eg .c0t0d0)
6. #newfs /dev/rdsk/c0t0d0
7. #mkdir /newfs
8. #mount /dev/dsk/c0t0d0 /newfs
9. #df -h

Solaris : loghost could not be resolved

add this line into /etc/hosts

127.0.0.1 localhost loghost

save and exit.

Solaris 10 : Changing hostname

1. /etc/hosts
2. /etc/nodename
3. /etc/hostname.

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

root@-i # more /etc/hosts
#
# Internet host table
#
::1 localhost
127.0.0.1 localhost
203.223.137.104 oratest oratest.com.my loghost

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

root@-i # more /etc/nodename
oratest

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

root@-i # more /etc/hostname.e1000g0
oratest

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

Ubuntu - How to get hardware info,version & serial

#biosdecode
#smidecode
#lshw
#lspci

In GUI mode :
#apt-get install lshw-GTK
#lshw-GTK

Solaris - OBP : FATAL: system is not bootable, boot command is disabled

solution :
{0}ok reset-all
{0}ok boot disk

Check disk info in Linux

#fdisk -l

- l : List the partition tables for the specified devices and then exit

#df -h

-h : human readable

Mount error after upgrade to Ubuntu 9.10

Solution:

#vi /etc/fstab
-> disable automount
-> save and exit

# reboot

start in fail safe recovery mode

#fsck
answer y for all request

#reboot

try mount again

enable automount in fstab

Ubuntu - FTP server

Ubuntu - Install vsftpd
---------------------------
apt-get install vsftpd
nano /etc/vsftpd.conf


local_enable=YES
write_enable=YES
chown_uploads=YES
chown_username=root

(comment out all these option)

/etc/init.d/vsftpd stop
reboot


Ubuntu - vsftpd.chroot_list

#root
bin
daemon
adm
lp
sync
shutdown
halt
mail
news
uucp
operator
games
nobody

Apply windows registry file in linux

To apply .reg file for window$ application:

# wine regedit file.reg