Ubuntu :: Secure Copy: Overwrite Remote File With Sudo?

Mar 18, 2011

My situation:

Host A: need sudo to access the file
Host B: need sudo to access/overwrite the target file

How to copy a file from host A to host B without creating temporaries? Is it possible?

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Ubuntu :: Secure Overwrite Of A Partition?

Jul 9, 2011

i have a duel boot of windows and ubuntu, but recently i got a virus, but this things is leach like in appearance. I tried reinstalling windows, then reformatting the drive and reinstalling windows but i still have this same virus? This is dead creepy for me because windows cant read any of the other partitions, which are all formatted for linux, in formats which windows does not have the capability to read. So i dont understand how this could have happened. There are many things that i am still to try -- including completely overwriting the MBR with a GRUB in case the virus somehow resides in there?? But i have decided to give up on windows from now, because, despite all the actions i have taken, it has failed me repeatedly. But having had these viruses 3 times, i have noticed something, the first time i had a virus was my fault, because i left my computer insecure.

After i formatted my HDD following that virus, i noticed i had 10gb of space robbed from me, disk utility believed i had a 160gb drive, but Gparted and everything else told me that i only had 149.7gb of space??? now after this virus - which logically couldn't have happened without someone directly attempting to tunnel my computer as i had so much extra security - i lost 6gb of space from my HDD?? Sounds odd?

THE QUERY: So i want to know if (from ubuntu) it is possible to do a secure format (similar to with a mac - were it completely overwrites everything, instead of just deleting the links) although, possibly i am not going back to windows, ever.

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General :: Remote Copy File

Aug 3, 2010

I would like to use the command rcp to copy file from remote server ( linux ) to local pc , what is the command ?the remote server name is lnx_srv , the path is /tmp/ora_file1.txt , the linux login id is ora_usr , the .rhosts have released to ora_usr the localhost pc path is c:OraI read the help page of windows , tried the command rcp lnx_srv.ora_usr:/tmp/ora_file1.txt c:Ora , but not work , the error is "rsh: can't establish connection" , Can advise what is wrong ? what comamnd should i use ?

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General :: Copy A File From Remote Directory

Aug 4, 2011

How to copy a file from remote to local directory and vice versa using ftp bat script file in telnet.

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General :: Remote File Copy Through Archiving Software ?

Oct 6, 2010

I need to back up a fold on a remote machine to my local box; the remote hd does not have enough space archive it, neither does my local box. I know there's a cantrip to pipe scp through gzip (or similar), but I don't remember the syntax.

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Software :: Using Dd To Copy An Image File To A Remote System?

Apr 7, 2010

I am trying to get the dd command to successfully copy a disk image to a remote system.Right now I am testing out the syntax by trying to copy the /dev/sda1 directory of the subject computer. The command syntax that I am using is the following:Code:dd if=/dev/sda1 ibs=4096 conv=notrunc,noerror | (ssh of=/roarchive/test obs=4096)The user account running this command is root, and the account does have key-based authentication between the source and destination computers. The command does not return any error messages, but when I check the directory on the destination system, the expected output is not there.

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Programming :: Copy A File Securely To Remote Host In JAVA?

Feb 2, 2009

I am looking for an API in JAVA which gives me functionality to copy a file to remote host in secure manner like (SCP).

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General :: Why Dolphin Makes Local Copy When Play A Remote .avi File

Oct 15, 2010

i am using dolphin 1.5 in kde 4.5.2. whenever i try to access movie file from remote samba server. dolphin copies the movie file to somewhere in local hard disk. so, i have to wait until a big file transferring complete. i know that it happens when i open .avi using mplayer. if i open the same remote file with kmplayer, it will player immediately instead of making local copy first. however, kmplayer is very slow and sounds and video stream breaking up, (i am sorry i do not know right english expression for this) i suppose this is not related to mplayer configuration. this seems to be dolphin problem. can i make dolphin to stop copying samba share to local disk and play instantly? there is a video in videos. it is comparing how dolphin and nautilus act differently when i play remote samba share movies.

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Security :: Granting Apache Sudo Rights Secure?

Sep 27, 2010

I have setup a VPS server, created two accounts to two domains respectively, and in one account I built a tool to manage other accounts. I have been rigorously researching and found information, however not implemented yet, about granting apache sudo rights through an interface on one account, so that it can execute scripts as root to manage installations in other accounts. what I mean this is my tool will use 'rsync' to duplicate installations from any account into any account.

My question for security, is it secure to grant apache sudo rights? I have not resolved successfully granting it permissions, and I would not want to waste my time investigating more on it if it can compromise the system in any way.

In your experience, is it feasible to build such a tool like I described? I have the tool working to copy within account and to addon domains and it works great, but I want it to manage all accounts on the server.

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Ubuntu :: Best Way To Secure Remote Desktop?

Oct 18, 2010

I was wondering what the best way to secure RD would be? What's the best one to use? I'd prefer a method that isn't always active, so maybe something that I need to enable via ssh first?

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General :: Why Use Patch Files Based Upon Different When Can Directly Overwrite The Old File With The New File

May 29, 2010

i want to know why do we need to patch files based upon diff when we can directly overwrite the old file with the new file.

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Software :: Overwrite The Contents Of A File Without Changing The File Size?

Jul 12, 2010

We have some large files with sampling data in it. Don't want to delete these files. But want to quickly overwrite the file with 0s and/or 1s and preserve the original file size.

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Ubuntu Networking :: Secure Remote Desktop With SSH FreeNX & DD-WRT?

Feb 1, 2010

For a Secure Remote Desktop on Ubuntu 9.10 here is how I did it using OpenSSH, FreeNX and a router with DD-WRT v24. Pic of it in use at bottom of post, transferring a file and remote desktop at the same time.

For the purposes of this guide I will use a Desktop as the Server (Host) which is at home. The Client will be a Laptop that I can use to control the Desktop remotely. First you should already be familiar with the Terminal which is where you enter commands (anything in a "Code:" box).

In Ubuntu it is in Applications > Accessories > Terminal In Kubuntu it is usually on the lower left taskbar and is called Konsole I am using Ubuntu so you may have to make some adjustments to this guide if you are not using Ubuntu. Installing OpenSSH (for the rest of this guide I will refer to it as only SSH)


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Ubuntu Networking :: Installing A Secure Remote Desktop?

Jul 18, 2011

I need to securely control my home computer from work. My home computer is connected to the internet via a wireless router using Tomato. I'm using the latest Ubuntu on both ends. Is the Remote Desktop that's installed by default good enough? What settings do I need for my home router to safely allow my remote connections and not leave it open to intruders?

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General :: Overwrite The Header Of A File Without Copying The Whole File?

Mar 1, 2011

Asuming I have two files, one large file and one small file, I want to write the smaller file to the large file without overwriting the remaining part of the larger file.

Both are binary files, and the large file can become very large, so I want to avoid copying the whole file, as that will take some time. Is there any standard Linux console utility to do this, or do I need to write it myself?

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Networking :: Secure Remote Desktop Access?

Feb 7, 2010

They are running Kubuntu. How to access their desktop from my home or office using Internet. Logically I remembered about kfrb and X11-vnc. But both of them need some approach to provide security. I'd like if someone could give me some pieces of advice on choosing the simplest and better approach:

To secure kfrb or x11-vnc is simpler or better to mount a vpn or to use an ssh tunnel? Is there any other solution? My pearents ISP use DHCP, so I think it would require some service like dyndns or similar...

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Security :: Setting Up Secure Remote Logins

Jun 17, 2010

I'm trying to secure the CentOS servers on our company network as the current situation is, shall we say, less-than-ideal: remote root logins with the same password across several servers (behind a firewall, on non-standard ports, but still) and several key processes running as root. My proposal to amend this consists of the following:

- setup a bare as possible SSH-gateway with only the normal user accounts to handle remote access
- disable the root login from anywhere else but LOCAL and create special accounts with root permissions for our ~4 system administrators, like admin.foo admin.bar that can only login from inside the company network, using SSH-keys.

So far my biggest obstacle seems to be creating the administrative users, how do I go about and do that? When I simply create a user adminfoo with uid=0 it will show on my shell as root, which makes it useless as a way to make our admins accountable for their actions. BTW, my initial proposal to use sudo unfortunately met with strong resistance, because it compromises usability.

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General :: Secure Remote Desktop Of Ubuntu On Windows Machine On Different Network?

Oct 22, 2010

I would like to setup a remote desktop for my Ubuntu computer so I can use my computer on a Windows computer that is on a different network. How can I do this?

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Ubuntu Multimedia :: Ffmpeg Crash When Trying To Overwrite File?

Jul 28, 2010

I'm getting some funny behavior from ffmpeg when I'm trying to increase the volume of an mp3 file and have it overwrite itself. For example, if I execute the following command:

ffmpeg -i name.mp3 -vol 1024 -y name.mp3

it will code the first 5 seconds or so and then quit with:

[mp3 @ 0x2db16d0]incomplete frame
Error while decoding stream #0.0

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General :: Why 'cannot Overwrite Existing File'

Mar 8, 2011

I try to write to a file "date > file" but Linux says 'cannot overwrite existing file'. I tried chmod 755 but still cannot write to the file. What should I do?

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Ubuntu :: No Dual Boot - Windows Overwrite Grub File

Jan 5, 2011

I've recently left Windows behind for good and have come to Linux (Ubuntu.) However, I've run into problems after trying to dual boot windows 7 and ubuntu. When I restarted my computer, I got a black screen with white text reading "Minimal BASH-like line editing is supported". I have the Ubuntu live cd and was able to try Ubuntu without having to install it, but after I put in a flash drive with Windows 7 on it, the Ubuntu CD has stopped working entirely.

The weird thing is, the computer that I installed Ubuntu on, already had Ubuntu and Windows 7 on it. And every OS was booting successfully. The reason I deleted the Ubuntu that was already on the computer, is because there were many different versions. I wanted to do a clean sweep and only have Ubuntu and Windows 7 installed on the computer. I know that if you try to dual boot Windows 7 and Ubuntu, Windows will overwrite the GRUB file, making it unable to dual boot.

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General :: Command To Overwrite File With Sed Output?

Jan 5, 2010

For example I want a file to be processed by sed, and then overwrite the file with sed's output. I would try this:
sed '<regex goes here>' myfile > myfile
But it doesn't work as expected, instead it empties the file (I am thinking that as the first byte comes out of sed, it overwrites the whole file and sed has nothing more to do). How can I make this work?

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Software :: Overwrite Same Input File Image

Mar 18, 2011

dd bs=8192 if=Image of=/dev/PS0
In the above command, I cant able to understand the option "of=/dev/PS0"

Whether it means,
1) to write the input file "Image" in to "/dev/PS0" of the Floppy device
2) to overwrite the same input file "Image" in a file format ("/dev/PS0") of Floppy.

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Ubuntu Security :: Remote Sudo In Natty

May 30, 2011

When I access a remote Natty client using VNC I cannot use the sudo command in a terminal. In fact, the terminal closes itself as soon as I type the sequence sud. Even su d. Or su d.

Sua, su a, su c, su e do not cause the terminal to close itself.

This appears to be some sort of new security "feature".

How do I "work around" it?

I'd better elaborate.

I have a remote Natty running 11.04 64-bit desktop version. I have installed tightvncserver on it. I log in on 5901 from a Ubuntu 10.04 64-bit desktop using vinagre. The desktop works fine except when I open a terminal in it and type sud. As soon as I type the d the terminal vanishes. This appears to be a deliberate feature. I also log in to other clients that run 10.04 and this does not happen. I have run Mint 11 in VirtualBox on my local machine and created the same remote desktop and viewed it from mint 11 itself. Same thing happens.

It seems to me that 11.04 has been modified to kill a terminal that is part of a VNC display when sud are typed.

how to remotely administer a 11.04 desktop?

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Programming :: Rpm Spec File To Overwrite Service Script?

May 5, 2010

I have written a spec file for packaging my application in an rpm, but it reports a conflict when I am trying to update my service script in /etc/init.d/. This is a file that I do need to update/replace so how might I force the rpm to do that?


Summary: A program that increases WAN performance.
Name: packetsqueezer
Version: 0.3.05
Release: 1


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Software :: Allow Remote X Users To Sudo

Aug 14, 2010

Is there a way to allow users from a remote account (say, those connecting to the X server from a remote location) to sudo? What kind of account do you need to add to /etc/sudoers to be able to allow this to happen?

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Fedora :: Where SUDO File At / Add Myself As A SUDO'er?

Oct 11, 2009

Where is the SUDO file at, and remind me how do I add myself as a SUDO'er?

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General :: Copy A Read-Only File And Make The Copy Writable With A Single Cp Command?

Mar 1, 2011

How to copy a Read-Only file in Linux and make the copy writable with a single cp command in Linux (Ubuntu 10.04)? The --no-preserve and --preserve seemed to be good candidates, except that they should "and" the mode flags, while what I am looking for is something that will "or" them (add +w mode).

More details: I have to import a repository from GIT to Perforce. I want that all Perforce depot files are Read-Only (that is how Perforce was designed), while all other files that were derived/copied from depot files are writable. Currently if a Makefile tries to copy a Read-Only file then the derived file will also be Read-only. This leads to build-errors when cp tries to overwrite Read-Only file second time. Of course the --force is a workaround here but then the derived file is also Read-Only. Also I do not want to mess with "chmod" after each "cp" command - I will do that only as the last resort.

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Ubuntu :: Remote Copy Like Scp But Without Encypt

Jul 16, 2010

I really like scp for sending a random file here or there, were a permanent share is overkill. Sometimes I send a very large file over a local network that has no reason to encrypted. The encryption maxes out the processor that needs cycles for other stuff and bottlenecks the transfer. Is there a command with similar syntax without encryption?

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SUSE :: Way To Sudo Or Su - From An IDE Such As Netbeans Or Aptana When Remote Login To A 10.0 Server?

Feb 1, 2010

I'm trying to find a way to sudo or su - from an IDE such as netbeans or aptana when I remote login to a SUSE 10.0 server. I need it for web developing because logging in with putty and using vim (as i do now) is not my style

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