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
There is no indication that Gopal has read the 'man' pages or even
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.
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
>>>
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
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>>
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>>
>
> _______________________________________________
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