Redhat Linux 7 Question Plz help to solve my query about File permission

Sagar P Dalvi · 12-23-2014, 01:53 AM

I am New in the Red-hat 7

Well I want to ask question about File permission

-rwxr-xr-x. 19 root root 3340 Dec 23 09:32 dev\

-rw-r--r--. 1 root root 54 Dec 23 10:24 mentos

I know about -rw-r--r-- permissioin

Here is my question
What is 19 ; 1 in above 2 lines about

I know about the root and root and date of modification
I heard it is called block but don't know what a block

Can any one explain me
Thank you

PrinceCruise · 12-23-2014, 02:17 AM

That is number of hard links for that file/folder.

Quote:

A file typically has one link, but there are more links if it has aliases. The count starts at two for folders because UNIX considers the parent and current directories to be links. This figure includes the number of sub directories in a folder as well.

Regards.

Sagar P Dalvi · 12-23-2014, 02:40 AM

can you provide any linux 7 book

veerain · 12-23-2014, 02:49 AM

To learn these may helpful as start

1) TDLP Howto's and Guides http://www.tldp.org

2) man pages of linux commands, configuration files, posix doc, linux include files.

Code:

man commandname

3) Info pages of linux commands.

Code:

info commandname

Sagar P Dalvi · 12-23-2014, 03:30 AM

really helpful sir

PrinceCruise · 12-23-2014, 07:42 AM

Just one more piece of information as you seem to be starting fresh :-

> Don't install RHEL. Rather go for the free clone - CentOS. Because getting official packages through their repos and configuring third party repos becomes very easy minus the hassle of having a subscription.

> Install CentOS in a virtual machine on your existing laptop/ Desktop's OS or dual boot.

> CentOS documentation is itself excellent, and the web is filled with an ocean of information, just need to know "how to google."

Best of luck.

Regards.

John VV · 12-23-2014, 01:55 PM

for Redhat

buy$$$$ the REQUIRED support contract
-- that is not even open for discussion

buy it !!!

or

install the free clone
CentOS 7.0

both use the redhat documentation on the redhat website

https://access.redhat.com/documentat...erprise_Linux/

Sagar P Dalvi · 12-23-2014, 11:33 PM

Thank you sir
I am downloading Cent os 7