06-24-2008
what did dd command do to destination drive
I am almost a beginner. And a total idiot.
so i have
done a dd if=/somefile.img of=/dev/sdc1
sdc1 was a USB disk drive with many many files on it i did not want to lose.
What it did was remove the dev/scd1 USB drive and my mounting of /media/movie and then change it to /media/somefile as the new mount point. The file system says UDF.
On reboot this comes up as a totally new mount and I can only see the results of the above .img extraction. (at least that worked)
the somefile.img was 4.4gb and was an image of a DVD.
I have since found out that DD is a unix command. So what did this do to this drive.
For example did it erase the MTF?
It took about 15 min to do so I am assuming it did not write to the whole 1TB that this disk is?
Did it write to the beginning of the disk with only 4.4gb of information?
Thus is it possible that although the other files cannot be seen at the moment some of the file recovery programs may be able to see them? (this last question is not so important as i am back with wondows and trying to do this I am just trying to understand what dd does)
10 More Discussions You Might Find Interesting
1. Solaris
Hi,
We have some IBM LTO tape drives connect over SAN.
I have the following questions :-
1) Command that can list the tape drive details like who is manufacturer, model number, make etc etc
2) I would like to know what are the key differences between IBM LTO Generation 1 and Generation... (5 Replies)
Discussion started by: new2prog
5 Replies
2. Solaris
Hi,
we are running solaris 9 on V280R. Due to power failure, one disk's label and lost its details like drive type etc.
Disk details:
<SUN72G cyl 14087 alt 2 hd 24 sec 424>
single partition on slice 6 with UFS.
The below i see when i run "format" command
.....
.....
4.... (1 Reply)
Discussion started by: prvnrk
1 Replies
3. IP Networking
Hi All,
I want to ping 1500 bytes of data from a pc to another pc in the network. What is command used for the same?
Thanks (2 Replies)
Discussion started by: rvan
2 Replies
4. UNIX for Advanced & Expert Users
I want to use this command to tar to tape:
tar cf - DIR | compress > `hostname`_`date +%m-%d-%y`.DIR.tar.Z
this of course goes to the FS.
How do I modify this to go directly to tape?
My tape device is /dev/rmt/0
thanks.
Having so many posts you should be familiar using code tags.... (7 Replies)
Discussion started by: djehresmann
7 Replies
5. UNIX Desktop Questions & Answers
Hi All,
I have the below code where Iam connecting from xzur111pap server to xzur0211pap server thru ssh to execute some commands.
ssh xzur0211pap
spaceleft=`df -k /home |tail -1 | awk '{print $5}'`
spaceleft=${spaceleft%\%}
if ]; then
echo "ALERT : HUFS(/home $spaceleft)"
exit 0... (3 Replies)
Discussion started by: gaddamja
3 Replies
6. Shell Programming and Scripting
I am writing a shell script (runs on HP Unix) which copies files from a source directory to another destination daily. The destination directory always have the files with same name as in the source directory. And daily a new file will be created in the source.
cp command works fine if the file... (1 Reply)
Discussion started by: arunkumar_ms
1 Replies
7. Red Hat
I ran the following command.
cat abc.c > abc.c
I got message the following message from command cat:
cat: abc.c : input file is same as the output file
How the command came to know of the destination file name as the command is sending output to standard file. (3 Replies)
Discussion started by: ravisingh
3 Replies
8. UNIX for Dummies Questions & Answers
Hi Guys,
Can any one help me on this.
I need help to move .csv/.xls file from unix path to windows shared drive or c:\ drive?
Regards,
LKR (1 Reply)
Discussion started by: lakshmanraok117
1 Replies
9. Shell Programming and Scripting
Hello Team,
Is there any Linux command / script available so that, I could create a simple 0 byte file in destination server by issuing the command from source server.
If yes, Could you please let me know the possible solutions.
in other words I just want to create a touch file in my home... (1 Reply)
Discussion started by: madhuraju
1 Replies
10. Shell Programming and Scripting
I have a script on a Linux box which scp the files to windows server without any issues. but there are time frames where the windows server will not be available due to maintenance. hence I need to check if the remote location is available before running the scp command.
scp... (3 Replies)
Discussion started by: gpk_newbie
3 Replies
LEARN ABOUT DEBIAN
img-png
img-png(3tk) img-png(3tk)
NAME
img-png - Img, Portable Network Graphics format (png)
SYNOPSIS
package require Tk
package require img::png ?1.3?
image create photo ?name? ?options?
DESCRIPTION
The package img::png is a sub-package of Img. It can be loaded as a part of the complete Img support, via package require Img, or on its
own, via package require img::png.
Like all packages of Img it does not provide new commands, but extends the existing Tk command image so that it supports files containing
raster images in the Portable Network Graphics format (png). More specifically img::png extends Tk's photo image type.
The name of the new format handler is png. This handler provides new additional configuration options. See section PNG OPTIONS for more
detailed explanations.
All of the above means that in a call like
image create photo ?name? ?options?
[1] Image data in png format (options -data and -file) is detected automatically.
[2] The format name png is recognized by the option -format. In addition the value for the option is treated as list and may contain
any of the special options listed in section PNG OPTIONS.
PNG OPTIONS
The handler provides no true options at all, but accepts pairs of keys and values when writing a PNG file. Each pair will be written as a
named text chunk where the key provides the name of the chunk and the value its contents. For example
png Author <name> Title <title> Description ...
TRANSPARENCY
If you want to write images to disk which contain transparency information (e.g. PNG with alpha channel) you need at least Tk 8.3.
SEE ALSO
img-bmp, img-gif, img-ico, img-intro, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-sgi, img-sun, img-tga, img-tiff, img-
window, img-xbm, img-xpm
KEYWORDS
image handling, png, tk
COPYRIGHT
Copyright (c) 1995-2003 Jan Nijtmans <nijtmans@users.sourceforge.com>
Img 1.3 img-png(3tk)