Some time you might find some applications are having only .rpm files but you want a .deb package for your debian,Ubuntu and other debian derived ditributions.If you can’t find .deb debian package in any of the debian,ubuntu repositories or elsewhere, you can use the alien package converter to install the .rpm file.
Alien is a program that converts between the rpm, dpkg, stampede slp, and slackware tgz file formats. If you want to use a package from another distribution than the one you have installed on your system, you can use alien to convert it to your preferred package format and install it.
Despite the large version number, alien is still (and will probably always be) rather experimental software. It has been used by many people for many years, but there are still many bugs and limitations.
Alien should not be used to replace important system packages, like sysvinit, shared libraries, or other things that are essential for the functioning of your system. Many of these packages are set up differently by Debian and Red Hat, and packages from the different distributions cannot be used interchangably. In general, if you can’t uninstall the package without breaking your system, don’t try to replace it with an alien version.
Install alien in debian
#apt-get install alien
This will install all the required packages.Now you can start converting your .rpm files to .deb packages.
Available Options for alien
Convert the package.rpm into a package.deb
#alien -d package-name.rpm
Convert the package.rpm into a package.deb, and install the generated package.
#alien -i package-name.rpm
If you want to keeps alien from changing the version number use the following command
#alien -k rpm-package-file.rpm
Example
Suppose we have a avg antivirus avg71lms-r30-a0782.i386.rpm file
To convert .rpm to debian
#alien -k avg71lms-r30-a0782.i386.rpm
Now you should be having avg71lms-r30-a0782.i386.deb file
To install .deb file
#dpkg -i avg71lms-r30-a0782.i386.deb
If you don’t use -k option you should see avg71lms_r30-1_i386.deb file the difference is it will add 1
Install alien in Ubuntu
$sudo apt-get install alien
You can check the above section for available options
Example
Suppose we have a avg antivirus avg71lms-r30-a0782.i386.rpm file
To convert .rpm to debian
$sudo alien -k avg71lms-r30-a0782.i386.rpm
Now you should be having avg71lms-r30-a0782.i386.deb file
To install .deb file
$sudo dpkg -i avg71lms-r30-a0782.i386.deb
If you don’t use -k option you should see avg71lms_r30-1_i386.deb file the difference is it will add 1
Sunday, January 25, 2009
Recover Data from a Damaged hard disk using dd_rhelp
dd_rhelp is a bash script that handles a very usefull program written in C which is called dd_rescue, it roughly act as the dd linux command with the caracteristic to NOT stop when it falls on read/write errors.
This makes dd_rescue the best tool for recovering hard drive having bad sectors.In short, it’ll use dd_rescue on your entire disc, but will try to gather the maximum valid data before trying for ages on badsectors. So if you leave dd_rhelp work for infinite time, it’ll have the same effect as a simple dd_rescue. But because you might not have this infinite time , dd_rhelp will jump over bad sectors and rescue valid data. In the long run, it’ll parse all your device with dd_rescue.
You can Ctrl-C it whenever you want, and rerun-it at will, it’ll resume it’s job as it depends on the log files dd_rescue creates.In addition, progress will be shown in a ASCII picture of your device beeing rescued.
Why use dd_rhelp and not dd_rescue ?
dd_rhelp uses dd_rescue to compute a recovery path through the device that will focus on valid data recovering. This recovery path will go through all the device, exactly as dd_rescue could do it on its own without any path. This means that dd_rhelp will save you time ONLY IF YOU INTEND TO CANCEL ITS JOB BEFORE THE END of a full recovery.
Because a considerable amount of time is taken to try to rescue badsectors. This amount of time can be mesured in days,
month, years, depending on your device capacity and its defectiveness. You might not want to spend this time knowing that 99 percent of this time will be taken to look at badsector and won’t lead to any more data recovering.
dd_rhelp shifts this useless waiting time to the end. Using dd_rescue strait throughout your device make your waiting time dependent on the badsector distribution.
Install dd_rhelp
First you need to download latest version from here
Preparing your system
#apt-get install make gcc g++ ddrescue
If you are using ubuntu linux use the following command
sudo apt-get install make gcc g++ ddrescue
Download dd_rhelp using the follwoing command
wget http://www.kalysto.org/pkg/dd_rhelp-0.0.6.tar.gz
Now you have dd_rhelp-0.0.6.tar.gz file
Extract this file using the following command
tar xzvf dd_rhelp-0.0.6.tar.gz
cd dd_rhelp-0.0.6
Run the following commands
# ./configure
# make
# make install
If you are using ubuntu linux use the following command
sudo ./configure
sudo make
sudo make install
This will complete the installation and this will install program under /usr/local/bin/dd_rhelp
dd_rhelp Syntax
dd_rhelp {filename|device} {output-file} [{info}]
or dd_rhelp --help
or dd_rhelp --version
Now we will see how to use ddrescue under damaged disk
If you have a damaged hard disk /dev/sda1 and you have an empty space hard disk /dev/sda2 Now if you want to copy data from /dev/sda1 to /dev/sda2 use the following command
#dd_rhelp /dev/sda1 /dev/sda2/backup.img
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda1 /dev/sda2/backup.img
Output looks like below
/usr/bin/tail: Warning: “+number” syntax is deprecated, please use “-n +number”
=== launched via ‘dd_rhelp’ at 0k, 0 >>> ===
dd_rescue: (info): ipos: 104384.0k, opos: 104384.0k, xferd: 104384.0k
errs: 0, errxfer: 0.0k, succxfer: 104384.0k
+curr.rate: 10178kB/s, avg.rate: 8532kB/s, avg.load: 31.3%
dd_rescue: (info): /dev/sda2 (104391.0k): EOF
Summary for /dev/sda2 -> backup.img:
dd_rescue: (info): ipos: 104391.0k, opos: 104391.0k, xferd: 104391.0k
errs: 0, errxfer: 0.0k, succxfer: 104391.0k
+curr.rate: 355kB/s, avg.rate: 8519kB/s, avg.load: 31.3%
/usr/bin/tail: Warning: “+number” syntax is deprecated, please use “-n +number”
This copies an image of /dev/sda1 to sda2
Now you need to check the backup image consistency this will check for is there any problems with this image.
#fsck -y /dev/sda2/backup.img
If you are using ubuntu linux use the following command
sudo fsck -y /dev/sda2/backup.img
After finishing this checking you need to mount your disk image in to your other hard disk
#mount /dev/sda2/backup.img /mnt/recoverydata
If you are using ubuntu linux use the following command
sudo mount /dev/sda2/backup.img /mnt/recoverydata
This will mount all the data from the backup.img under /mnt/recoverydata now you can try to access the data it should
work without any problem.
Restore image
If you want to restore this image use the following command
#dd_rhelp /dev/sda2/backup.img /dev/sda1
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda2/backup.img /dev/sda1
Copy Disk Image to remote machine using SSH
If you want to copy your disk image to remote machine over ssh you need to use the following command
#dd_rhelp /dev/sda1 - | ssh username@machineip ‘cat /datarecovery/backup.img’
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda1 - | ssh username@machineip ‘cat /datarecovery/backup.img’
This will be prompetd for password of the username you have menctioned in the above command after entering the password
dd_rhelp strats copying obviously it will take some time to copy over the network
This makes dd_rescue the best tool for recovering hard drive having bad sectors.In short, it’ll use dd_rescue on your entire disc, but will try to gather the maximum valid data before trying for ages on badsectors. So if you leave dd_rhelp work for infinite time, it’ll have the same effect as a simple dd_rescue. But because you might not have this infinite time , dd_rhelp will jump over bad sectors and rescue valid data. In the long run, it’ll parse all your device with dd_rescue.
You can Ctrl-C it whenever you want, and rerun-it at will, it’ll resume it’s job as it depends on the log files dd_rescue creates.In addition, progress will be shown in a ASCII picture of your device beeing rescued.
Why use dd_rhelp and not dd_rescue ?
dd_rhelp uses dd_rescue to compute a recovery path through the device that will focus on valid data recovering. This recovery path will go through all the device, exactly as dd_rescue could do it on its own without any path. This means that dd_rhelp will save you time ONLY IF YOU INTEND TO CANCEL ITS JOB BEFORE THE END of a full recovery.
Because a considerable amount of time is taken to try to rescue badsectors. This amount of time can be mesured in days,
month, years, depending on your device capacity and its defectiveness. You might not want to spend this time knowing that 99 percent of this time will be taken to look at badsector and won’t lead to any more data recovering.
dd_rhelp shifts this useless waiting time to the end. Using dd_rescue strait throughout your device make your waiting time dependent on the badsector distribution.
Install dd_rhelp
First you need to download latest version from here
Preparing your system
#apt-get install make gcc g++ ddrescue
If you are using ubuntu linux use the following command
sudo apt-get install make gcc g++ ddrescue
Download dd_rhelp using the follwoing command
wget http://www.kalysto.org/pkg/dd_rhelp-0.0.6.tar.gz
Now you have dd_rhelp-0.0.6.tar.gz file
Extract this file using the following command
tar xzvf dd_rhelp-0.0.6.tar.gz
cd dd_rhelp-0.0.6
Run the following commands
# ./configure
# make
# make install
If you are using ubuntu linux use the following command
sudo ./configure
sudo make
sudo make install
This will complete the installation and this will install program under /usr/local/bin/dd_rhelp
dd_rhelp Syntax
dd_rhelp {filename|device} {output-file} [{info}]
or dd_rhelp --help
or dd_rhelp --version
Now we will see how to use ddrescue under damaged disk
If you have a damaged hard disk /dev/sda1 and you have an empty space hard disk /dev/sda2 Now if you want to copy data from /dev/sda1 to /dev/sda2 use the following command
#dd_rhelp /dev/sda1 /dev/sda2/backup.img
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda1 /dev/sda2/backup.img
Output looks like below
/usr/bin/tail: Warning: “+number” syntax is deprecated, please use “-n +number”
=== launched via ‘dd_rhelp’ at 0k, 0 >>> ===
dd_rescue: (info): ipos: 104384.0k, opos: 104384.0k, xferd: 104384.0k
errs: 0, errxfer: 0.0k, succxfer: 104384.0k
+curr.rate: 10178kB/s, avg.rate: 8532kB/s, avg.load: 31.3%
dd_rescue: (info): /dev/sda2 (104391.0k): EOF
Summary for /dev/sda2 -> backup.img:
dd_rescue: (info): ipos: 104391.0k, opos: 104391.0k, xferd: 104391.0k
errs: 0, errxfer: 0.0k, succxfer: 104391.0k
+curr.rate: 355kB/s, avg.rate: 8519kB/s, avg.load: 31.3%
/usr/bin/tail: Warning: “+number” syntax is deprecated, please use “-n +number”
This copies an image of /dev/sda1 to sda2
Now you need to check the backup image consistency this will check for is there any problems with this image.
#fsck -y /dev/sda2/backup.img
If you are using ubuntu linux use the following command
sudo fsck -y /dev/sda2/backup.img
After finishing this checking you need to mount your disk image in to your other hard disk
#mount /dev/sda2/backup.img /mnt/recoverydata
If you are using ubuntu linux use the following command
sudo mount /dev/sda2/backup.img /mnt/recoverydata
This will mount all the data from the backup.img under /mnt/recoverydata now you can try to access the data it should
work without any problem.
Restore image
If you want to restore this image use the following command
#dd_rhelp /dev/sda2/backup.img /dev/sda1
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda2/backup.img /dev/sda1
Copy Disk Image to remote machine using SSH
If you want to copy your disk image to remote machine over ssh you need to use the following command
#dd_rhelp /dev/sda1 - | ssh username@machineip ‘cat /datarecovery/backup.img’
If you are using ubuntu linux use the following command
sudo dd_rhelp /dev/sda1 - | ssh username@machineip ‘cat /datarecovery/backup.img’
This will be prompetd for password of the username you have menctioned in the above command after entering the password
dd_rhelp strats copying obviously it will take some time to copy over the network
Kill Session in Oracle DB
Now I try to write about kill session in oracle database. First time please login to oracle server. Type sqlplus then enter
$ sqlplus
SQL*Plus: Release 10.2.0.3.0 - Production on Sat Jan 24 07:26:59 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Enter user-name:
$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.3.0 - Production on Sat Jan 24 07:27:17 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP and Data Mining options
To get serial of the session that will kill type @sql_sid then enter
SQL> @sql_sid
enter value for sid: session_id
Now kill session
SQL> alter system kill session 'session,serial';
System altered.
SQL>
If the message showed System Altered the killing session is done
$ sqlplus
SQL*Plus: Release 10.2.0.3.0 - Production on Sat Jan 24 07:26:59 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Enter user-name:
$ sqlplus / as sysdba
SQL*Plus: Release 10.2.0.3.0 - Production on Sat Jan 24 07:27:17 2009
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP and Data Mining options
To get serial of the session that will kill type @sql_sid then enter
SQL> @sql_sid
enter value for sid: session_id
Now kill session
SQL> alter system kill session 'session,serial';
System altered.
SQL>
If the message showed System Altered the killing session is done
Howto: Connect automatically on login to a Wireless Router on Ubuntu 7.10
I only tried this for a Belkin G+MIMO but it should be ok for most router types.
Before you carry on:
Do you know the full essid of your router?
Do you know if your adapter is plugged in?
Do you know if you have a static or dynamic IP or a DHCP?
If it’s an RTxx driver, do you have ndiswrapper or Serialmonkey’s drivers installed?
First off you need to know the full essid of your router (This is the name of the network), in my case it is Belkin_G_Plus_MIMO
So open up network admin in manual configuration, make sure wlan0 is plugged in, this is your adapter, click properties and disable Roaming Mode by clicking that checked box there.
In the first box, Network Name, type in your network’s essid, this could be anything from My_Interwebs or NETGEAR121324345 or anything, it’s best to use the dropdown box next to it and choose from the list of currently detected routers, pick yours.
Type in a WPA key if you have one, obviously make sure it’s correct.
Now for the next column, it’s best to check your Router’s manual for this, but for most users it’s Automatic Configuration (DHCP), if you know you have a Static or Dynamic IP or any other option, make sure you use them, but as I said, it’s usually DHCP.
Now click OK.
These next few steps may not be necessary but it made sure I was connected. In Terminal run:
* sudo iwconfig wlan0 essid Network_Name
Obviously, Network_Name is the essid you used in Manual Configuration..
* sudo iwconfig wlan0 key off
OR
* sudo iwconfig wlan0 key yourwpakey
Here goes your WPA key, if you don’t have one, simply type off.
Now do
* sudo dhclient wlan0
This will make sure you’re connected ok. If you only _send_ DHCPOFFERS and receive nothing, you are not connected and it’s best you try another method.
Before you carry on:
Do you know the full essid of your router?
Do you know if your adapter is plugged in?
Do you know if you have a static or dynamic IP or a DHCP?
If it’s an RTxx driver, do you have ndiswrapper or Serialmonkey’s drivers installed?
First off you need to know the full essid of your router (This is the name of the network), in my case it is Belkin_G_Plus_MIMO
So open up network admin in manual configuration, make sure wlan0 is plugged in, this is your adapter, click properties and disable Roaming Mode by clicking that checked box there.
In the first box, Network Name, type in your network’s essid, this could be anything from My_Interwebs or NETGEAR121324345 or anything, it’s best to use the dropdown box next to it and choose from the list of currently detected routers, pick yours.
Type in a WPA key if you have one, obviously make sure it’s correct.
Now for the next column, it’s best to check your Router’s manual for this, but for most users it’s Automatic Configuration (DHCP), if you know you have a Static or Dynamic IP or any other option, make sure you use them, but as I said, it’s usually DHCP.
Now click OK.
These next few steps may not be necessary but it made sure I was connected. In Terminal run:
* sudo iwconfig wlan0 essid Network_Name
Obviously, Network_Name is the essid you used in Manual Configuration..
* sudo iwconfig wlan0 key off
OR
* sudo iwconfig wlan0 key yourwpakey
Here goes your WPA key, if you don’t have one, simply type off.
Now do
* sudo dhclient wlan0
This will make sure you’re connected ok. If you only _send_ DHCPOFFERS and receive nothing, you are not connected and it’s best you try another method.
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