just type the command set
NB:- tested on ubuntu 9.04
Sunday, February 28, 2010
Why partition hard disks ?
why partition ?
overrun protection
easier administration
multiple disks
makes the process of defragmentation easier
overrun protection
easier administration
multiple disks
makes the process of defragmentation easier
Saturday, February 27, 2010
makewhatis
cbeshears
what is the ubuntu equivalent of makewhatis ?
gruepig
. Just type 'sudo mandb' at the command prompt
what is the ubuntu equivalent of makewhatis ?
gruepig
. Just type 'sudo mandb' at the command prompt
Thursday, February 25, 2010
Install truecrypt on ubuntu
Run a quick update
#apt-get update
You need to install the libgtk2.0-0 package, even though I have no GUI installed. Truecrypt requires this, as it doesn't allow you to install command-line only.
#apt-get install libgtk2.0-0
Once this is done you'll see an error since you don't have any other gtk/gui packages installed. To fix this simeply do:
#apt-get -f install
Now on to actually install truecrypt itself.
download you specific .deb package from truecrypt.org
I'm running the 64bit os so i grabbed:
Ubuntu - x64 (64-bit) .deb
Untar the package.
#tar zxvf truecrypt-6.1a-ubuntu-x64.tar.gz
Simply run the automatic setup
#./truecrypt-6.1a-setup-ubuntu-x64
NB:- tested on ubuntu 9.04
#apt-get update
You need to install the libgtk2.0-0 package, even though I have no GUI installed. Truecrypt requires this, as it doesn't allow you to install command-line only.
#apt-get install libgtk2.0-0
Once this is done you'll see an error since you don't have any other gtk/gui packages installed. To fix this simeply do:
#apt-get -f install
Now on to actually install truecrypt itself.
download you specific .deb package from truecrypt.org
I'm running the 64bit os so i grabbed:
Ubuntu - x64 (64-bit) .deb
Untar the package.
#tar zxvf truecrypt-6.1a-ubuntu-x64.tar.gz
Simply run the automatic setup
#./truecrypt-6.1a-setup-ubuntu-x64
NB:- tested on ubuntu 9.04
Wednesday, February 24, 2010
Thursday, February 18, 2010
File creation date not modification date
kent 41
File creation date not modification date
I would like to know the creation date of my files. When I look at properties I only see modification dates. Is there a way to see when a file was created
arndt
No. Unix doesn't keep that information. It keeps three dates: last write, last read and last status change. The last one is involved in permission changes and name changes. To see it, use
Code: ls -lc
see:- http://www.faqs.org/faqs/unix-faq/faq/part3/section-1.html
jnoreiko:-
That FAQ doesn't really help -- it says linux doesn't store creation date, but why on earth not?
It's quite a useful thing to know.
arndt:-
I googled a bit, but didn't find anything clear on the subject (in the news groups comp.unix.*, there have been discussions about it from time to time). Back when Unix was designed, having a fourth date in inodes was probably felt to take too much space. I seem to remember having read something about it in a book about Unix, but that's no big help, I guess.
vivek gite:-
inode data structure limitations is main reason to this kind of limitations.This is done to save disk space and to optimize performance. You can view data strcture by in Linux kernel source tree and fs.h header file.
File creation date not modification date
I would like to know the creation date of my files. When I look at properties I only see modification dates. Is there a way to see when a file was created
arndt
No. Unix doesn't keep that information. It keeps three dates: last write, last read and last status change. The last one is involved in permission changes and name changes. To see it, use
Code: ls -lc
see:- http://www.faqs.org/faqs/unix-faq/faq/part3/section-1.html
jnoreiko:-
That FAQ doesn't really help -- it says linux doesn't store creation date, but why on earth not?
It's quite a useful thing to know.
arndt:-
I googled a bit, but didn't find anything clear on the subject (in the news groups comp.unix.*, there have been discussions about it from time to time). Back when Unix was designed, having a fourth date in inodes was probably felt to take too much space. I seem to remember having read something about it in a book about Unix, but that's no big help, I guess.
vivek gite:-
inode data structure limitations is main reason to this kind of limitations.This is done to save disk space and to optimize performance. You can view data strcture by in Linux kernel source tree and fs.h header file.
Sunday, February 14, 2010
Tuesday, February 9, 2010
LVM
http://tldp.org/HOWTO/LVM-HOWTO/
Ex:-
pvcreate /dev/hda5 /dev/hda6
vgcreate myvg /dev/hda5 /dev/hda6
vgdisplay
lvcreate -L +1900M -n mylv /dev/myvg
lvdisplay
mkfs -t ext3 /dev/myvg/mylv
mount
reducing the logical volume created:-
resize2fs /dev/myvg/mylv +1500M
e2fsck -f /dev/myvg/mylv
resize2fs /dev/myvg/mylv +1500M
lvreduce -L -1500M /dev/myvg/mylv
extending the logical volume created:-
lvextend -L +1500M /dev/myvg/mylv
adding new patition to the volume group myvg
vgextend myvg /dev/hda7
tested on Centos
Sunday, February 7, 2010
Ubuntu to Centos
http://ubuntuforums.org/showthread.php?t=824305
https://help.ubuntu.com/community/SwitchingToUbuntu/FromLinux/RedHatEnterpriseLinuxAndFedora
http://www.jpsdomain.org/linux/apt.html
https://help.ubuntu.com/community/SwitchingToUbuntu/FromLinux/RedHatEnterpriseLinuxAndFedora
http://www.jpsdomain.org/linux/apt.html
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