chmod command

[Gopal Ghosh]

Dear all,
how to use chmod command (in octal mode) for n number of files present in a
directory
Thanks
regards

[Roger Millington]

man chmod

Gopal Ghosh wrote:
> Dear all,
> how to use chmod command (in octal mode) for n number of files present in a
> directory
> Thanks
> regards
>
> Fedora-laptop-list mailing list
> [e-mail]
> http://www.redhat.com/mailman/listinfo/fedora-laptop-list

[Kae Verens]

Roger Millington wrote:
> man chmod

that's a bit harsh, Roger! It's possible that maybe Gopal does not 
understand the man pages.

example:
chmod 750 filename1 filename2
first digit is user
second digit is group
third digit is everyone (world)
7 = allow file owner to read, write, execute
5 = allow members of file's group to read and execute
0 = do not let anyone else use the file

the numbers are calculated by adding these up
4 = allowed to read
2 = allowed to write
1 = allowed to execute.
so 750 = (4+2+1)(4+1)(0)

kae
> Gopal Ghosh wrote:
> > Dear all,
> > how to use chmod command (in octal mode) for n number of files present in a
> > directory
> > Thanks
> > regards
> >
> > Fedora-laptop-list mailing list
> > [e-mail]
> > http://www.redhat.com/mailman/listinfo/fedora-laptop-list
>
> Fedora-laptop-list mailing list
> [e-mail]
> http://www.redhat.com/mailman/listinfo/fedora-laptop-list

[Roger Millington]

Kae Verens wrote:
> Roger Millington wrote:
> > man chmod
>
> that's a bit harsh, Roger! It's possible that maybe Gopal does not
> understand the man pages.

There is no indication that Gopal has read the 'man' pages or even
understands that they exist. I would expect that my response(s) will
invite Gopal's curiosity and that he will investigate this mysterious
'man' command.

The alternative is for someone to spend 20 minutes making precis of the
relevant 'man' pages and posting them.

Roger
> example:
> chmod 750 filename1 filename2
> first digit is user
> second digit is group
> third digit is everyone (world)
> 7 = allow file owner to read, write, execute
> 5 = allow members of file's group to read and execute
> 0 = do not let anyone else use the file
>
> the numbers are calculated by adding these up
> 4 = allowed to read
> 2 = allowed to write
> 1 = allowed to execute.
> so 750 = (4+2+1)(4+1)(0)
>
> kae
> > Gopal Ghosh wrote:
> > > Dear all,
> > > how to use chmod command (in octal mode) for n number of files
> > > present in a
> > > directory
> > > Thanks
> > > regards
> > >
> > > Fedora-laptop-list mailing list
> > > [e-mail]
> > > http://www.redhat.com/mailman/listinfo/fedora-laptop-list
> >
> > Fedora-laptop-list mailing list
> > [e-mail]
> > http://www.redhat.com/mailman/listinfo/fedora-laptop-list
>
> Fedora-laptop-list mailing list
> [e-mail]
> http://www.redhat.com/mailman/listinfo/fedora-laptop-list

[Gopal Ghosh]

Dear Kae and Roger,

Thank u so much 4 ur help and support … J
Today I want to share some words with all those fellow Linux devotees…….

But, first let me introduce my self …..

My name is gopal ghosh and I live in new Delhi….
my parent wanted me to become a  Railway Ticket Checker at old Delhi railway
station… but
I want to become a computer wizard.. as pictures of computer systems
influenced me so much as a kid… that
Some times in my dreams even I designed few cool mouse and trackball
designs.

and to fulfill my dreams I joined a local computer institute, but after 2
months they throw me out as my questions irritate them
in my view they are unable to satisfy my appetite to learn more…..

still today I feel the same appetite which drives me to learn new things

After this incident I strongly believe in self learning…..

now I am providing support for more than 1400 products from 32 principal
brands (www.adityagroup.com)

my reason for learning Linux is I want to provide tech support for Autodesk
smoke which runs on RHEL

so to learn Linux I am here on this fedora mailing list…….

I know what kind of information is mentioned in man pages to learn a command
FIRST I start with books with few switches and arguments

THEN I go to man pages to test some more switches and arguments , some times
I find it easy to ride through the man pages, but
sometimes I don't.

Each time I learn a new thing I found myself deeply in love with Linux
THANKS to Linux god who created such a nice thing which can perform so many
task in one command…

all that I mentioned here to emphasis the importance of a fair discussion
with out any altercation.

sometimes what I know is accurate for me and wrong for others but that
doesn't mean I fight with them to prove I am right.
i discuss the topic to update myself.
I appreciate ur efforts to help people like me and I also request u not to
involve in any kind of altercation.

here I am submitting my information for CP , CHMOD and command redirection

*command output redirection to file**
**STDIN – 0
STDOUT – 1
STDERR – 2

*> redirect STDOUT to file
> > append STDOUT to pre existing file

2> redirect STDERR to file
2>> append STDERR to existing file

*command < file ** send file as input*

*/dev/null is black hole for data as all inputs are ignored*

* PIPES*

* comman1 *| *command2
*
STDOUT > STDIN

( )  combines STDOUT of multiple programs such as

*(cal2007 ; cal2008) | less*

*&2>&1 redirects STDERR to STDIN*

cat filename.txt
Hello, World!

cat < filename.txtx
Hello, World

*ls **>** list.of.files *– redirect command output to this file

*ls **>>** list.of.files *- append output at the end of file

*command output redirection to another command*

* *

*ls **|** more *

* *

*ls **|** sort
*
*cp command**

*cp is a file & directory copy command

*cp file1 file2 dir*

for /gopal.nano

*cp /gopal.nano gopal2.nano /home*

*cp file1 file2 file3 file4 dir*
*
cp -a copies files and directories recurisvly
cp -p copies content along with permission and time stamp
cp -i interactive mode
cp -f force

**cp –api**
**chmod command*

change mode command

octal:                     0                              6
4                              0
binary: 000                         111                         111
111
symbolic:             sst                          rwx
rwx                        rwx

special                  user
group                    other
                                attributes

chmod o=r archive.sh
chmod g= topsecret.inf
chmod og=rw publicity.html
chmod ug=o

chmod g=u info.dat

rwx r-x r-- info.sh

111 101 100
7   5   4

*r--         100/4
rw-       110/6
rwx       111/7

-w-        010/2
-wx       011/3

--x        001/1*

*chmod 444 gopal.nano*

chmod [OPTION]... MODE[,MODE]... FILE...

chmod [OPTION]... OCTAL-MODE FILE...
chmod [OPTION]... --reference=RFILE FILE...

And finally HOPE u people don't mind me for repeating my questions again

** how to search for a group of files using wildcard and copy the result
content and redirecting it to a dir

** how to use chmod command (in octal mode) for n number of files present in
a
directory

Thanks
Regards

On Thu, Sep 18, 2008 at 5:28 PM, Roger Millington <
[e-mail]> wrote:
> Kae Verens wrote:
> > Roger Millington wrote:
> > > man chmod
> >
> > that's a bit harsh, Roger! It's possible that maybe Gopal does not
> > understand the man pages.
>
> There is no indication that Gopal has read the 'man' pages or even
> understands that they exist. I would expect that my response(s) will
> invite Gopal's curiosity and that he will investigate this mysterious
> 'man' command.
>
> The alternative is for someone to spend 20 minutes making precis of the
> relevant 'man' pages and posting them.
>
> Roger
> > example:
> > chmod 750 filename1 filename2
> > first digit is user
> > second digit is group
> > third digit is everyone (world)
> > 7 = allow file owner to read, write, execute
> > 5 = allow members of file's group to read and execute
> > 0 = do not let anyone else use the file
> >
> > the numbers are calculated by adding these up
> > 4 = allowed to read
> > 2 = allowed to write
> > 1 = allowed to execute.
> > so 750 = (4+2+1)(4+1)(0)
> >
> > kae
> > > Gopal Ghosh wrote:
> > > > Dear all,
> > > > how to use chmod command (in octal mode) for n number of files
> > > > present in a
> > > > directory
> > > > Thanks
> > > > regards
> > > > Fedora-laptop-list mailing list
> > > > [e-mail]
> > > > http://www.redhat.com/mailman/listinfo/fedora-laptop-list
> > >
> > > Fedora-laptop-list mailing list
> > > [e-mail]
> > > http://www.redhat.com/mailman/listinfo/fedora-laptop-list
> >
> > Fedora-laptop-list mailing list
> > [e-mail]
> > http://www.redhat.com/mailman/listinfo/fedora-laptop-list

[Frank Murphy]

On Fri, 2008-09-19 at 12:13 +0530, Gopal Ghosh wrote:
> Dear Kae and Roger,
> My name is gopal ghosh and I live in new Delhi….

Hi Gopal,

Welcome.
It may help you to know that there is a good fedora community in India.
If you may need ever to talk to someone closer geographically to you,
and in your local language, which can be very helpful.
There are some options available.
http://www.redhat.com/mailman/listinfo/fedora-india (Mailing-list)
On irc freenode.net #fedora-india (channel)
Am open to correction.

Otherwise, if all else fails, ask away.

Frank
>