Comments on: Understanding UNIX / Linux filesystem Inodes

By: Arun

Arun — Sun, 22 Jan 2012 12:26:56 +0000

Really nice website :)

Thanks for the information.

By: Senthilkumar

Senthilkumar — Wed, 28 Dec 2011 09:02:30 +0000

Hi to all,
I want some details about EXT4 Inode 128 and 256.
Actually i am using windows XP 32 bit os. And i have created ext4 256 inode to my 250GB external usb drive. after creating this ext4 256inode i pluged into windows XP machine the drive is not detecting to my system. i am using IFS 1.11a version. if any patch file please send me. any other information please share with me.

By: satish inmpudi

satish inmpudi — Tue, 23 Aug 2011 11:37:38 +0000

How to create a directory root user also cnt delete it

By: satish inmpudi

satish inmpudi — Tue, 23 Aug 2011 11:36:38 +0000

how to remove user with data directory also in one cmd

By: mhrivnak

mhrivnak — Mon, 11 Jul 2011 05:04:44 +0000

The number of soft links, or any information about soft links, is definitely not stored in the inode. Otherwise, great write-up.

By: Arunachalama

Arunachalama — Sun, 12 Dec 2010 07:37:28 +0000

When tried first time , permission was 000, obviously no access to write,read or execute to any one, not even root,
and one thing you have to notice in VIM editor commands
You have entered “:wq!” – it mens what ever the error (in your case the error is, you are trying to append data to a read only file) ignore and close the file forcefully.

if you tried it with “:wq” then it will shows the error i.e read only file.

but second time that is with permission 644, Vinoth is correct
Vinoth’s reply
“chmod644 the file has only read and write permissions not execute to owner so you write in test1 and can’t execute so system bydefault takes the last text. so try by chmod744 then insert text”

By: gabak

gabak — Mon, 18 Oct 2010 02:02:57 +0000

i did a file with touch
ex: touch 111
then
ls -la
i see the list of file with the date and hours.
why does it say in this article that linux inodo does nt say file creation time??

By: akhilesh singh

akhilesh singh — Thu, 12 Aug 2010 09:18:01 +0000

what is link of file system (ext2,ext3) and inode number.

By: sat

sat — Tue, 06 Jul 2010 05:58:42 +0000

I need to view inodes details in graphical window. Is there any command.

By: vinod

vinod — Wed, 14 Apr 2010 11:12:46 +0000

chantu,
when you inserting the text into test1 file while the file has 000 access permissions it gives you warning but when you after chmod644 the file has only read and write permissions not execute to owner so you write in test1 and can’t execute so system bydefault takes the last text. so try by chmod744 then insert text.

By: vinod

vinod — Wed, 14 Apr 2010 10:57:04 +0000

Super blog, I just love it . I am so excited to study more about linux.Thank you

By: karunakar reddy.P

karunakar reddy.P — Mon, 01 Mar 2010 16:20:20 +0000

hi, i am karan,
what is diff between soft link and hard link

By: vikram

vikram — Tue, 23 Feb 2010 18:28:08 +0000

1).How can we know how many had logged in and logged out in last 10 min?
2).How to delete a word from a file using shell?
3).How to extract the second row of a text-file?
4).How to compare 2 floating point num?

By: vikram

vikram — Tue, 23 Feb 2010 18:20:58 +0000

Hi,
I am vikram i am new to linux world. My frnds r playing vth linux. I am soo many doubts in this
1). If you having a string”one two three”,Which shell commamd would you use to extract the strings?
2).What is diff bw a shell varible that is exported and the one that is not exported?
3).How wil u list only the empty lines in a file(using grep)?
4).How do u open a read only file in unix?
5).How do u schedule a command to run at 4:00every morning?
6).What are diff kinds of loops available in shell script?
7).What is the use of “cut”command?give some example . Can we use “awk”or “sed”?
8).What is the line in shell script do #!/bin/ksh
9).What is diff bw writing code in shell and editor?
10).What is diff “thread” and “process”?

By: P.Karunakar reddy

P.Karunakar reddy — Sat, 20 Feb 2010 18:00:45 +0000

how can i recover data from inode numbers

By: spark

spark — Mon, 19 Oct 2009 10:48:36 +0000

welcome to the world of Linux
its quite easy to change password of root..start ur OS in single user mode….for tht u simply edit kernal parameter
to edit kernal simply go to kernal parameter press (e) to edit,nw simply rite 1 thr & thn press (b) to boot system to boot the system..
thr u will get a shell kind of( sh.3#) there simply type (passwd) shell will ask u for new Unix password..type the new password,thn retype it.ur password will b changed

By: Mukesh Handa

Mukesh Handa — Sun, 23 Aug 2009 10:17:26 +0000

Hi Friends I am new to this linux world…. I am struck with one thing…. I want to know how we can change our root password if i forget this….

By: Iyyappan

Iyyappan — Mon, 23 Mar 2009 17:28:34 +0000

hi,
innode ******** has illegal blocks. clear ?

what issue is this one. is this a major issue . kindly reply . i need help badly. mean while i am googling to find a solution

By: Bbp

Bbp — Thu, 19 Feb 2009 15:43:10 +0000

Tarun,

The command “chmod 000″ change the file rights. The code “000″ is in Octal.
The first byte is for file owner rights.
The second byte is for group rights.
The third byte is for rights according to other users.

The numbers, in octal, works as following:
0 = (—) = No right
1 = (–x) = Execute
2 = (-w-) = Write
4 = (r–) = Read
You can combine them:
3 = 1+2 = (-wx) = Write + Execute
5 = 1+4 = (r-x) = Read + Execute
6 = 2+4 = (rw-) = Read + Write
7 = 1+2+4 = (rwx) = Read + Write + Execute

Example, “chmod 740 somefile” will give full access to the owner of “somefile” (rwx), read only for other member of the file group (r–) and protect the file from been access by other users (—). The command “ls -l somefile” display this:
-rwxr—– 1 me filegroup 0 Feb 19 10:32 somefile

So, the command “chmod 000″ remove all rights to anyone on the file, including the owner. That’s why you can not wirte new data on it and you have to force quit from vi (q! is a forced quit).
The command “chmod 644″ give the number 6 for the owner (rw-) which give you back the read and write access.

By: Krishna

Krishna — Wed, 03 Dec 2008 16:54:46 +0000

There are no inodes for creating files, how can i overcome this situation