How To Execute Executable Files In Ubuntu

I'm sorry to ask such a simple question but every time I think I figure something out or think I'm going somewhere get stopped dead in my tracks. My friend installed linux on my computer and then moved away immediately so I have no one to help me!

I downloaded the webcam program Cheese. I found through some tutorials that I have to copy the folder to the /opt/ folder and the only way to do that is through the terminal. I found this tutorial and still can't manage to copy the folder. These are the problems I run into:

1. I don't know where to open the terminal. I've tried opening it from the extracted Cheese folder in my downloads folder and from the /opt/ folder itself. It opens up but:
2. when I type the command sudo cp -r cheese /opt/ it will ask for modernnewspeak's password. When I try to type this in nothing happens, even though it JUST let me type in the command. I pressed "enter" thinking maybe it was hiding my password and I get the message "cannot stat 'cheese'. No such file or directory"

please tell me what I'm doing wrong! I tried to follow that tutorial and look through the FAQ here but I cannot figure this out. Thank you in advance!

Can anyone teach this newbie how to open an executable file under Linux?? thanks!

I am using Ubuntu 14.10, but i think i would have the same question for other Linux oss.

I have downloaded an open source application from Blender.org...at least, i think i have.

How do i verify the app is downloaded

and how do i get it to run, that is, how do i put the app's icon on my desktop?

...thanks,

gmo

I am trying to figure out which way to go. I haven't used Samba in years, due to a lack of Windows, and for as often as I have needed something on another computer, with the small files, sneakernet was quicker then setting up NFS for a once in a GREAT while thing. (half a year or better in between, except maybe a txt file/word processor document)
Now over the years, I have played with different distro's, on different machines (normally ones someone has disposed of) and seem to remember that they don't all have the same permissions, so switching distro's caused issues (for as little as I needed, I put the data back on the new home, from backups). Will this be an issue with NFS, or is that simply a matter of creating/using the same username across different versions?

I have pretty basic file needs (want to back up, then I tend to burn or hook an external disc to back that up), so I am trying to figure out what to use.
Some of this may be covered by a pro's and cons of both, somewhere, but I haven't found it.
Thanks

Hi all,

In my work, I'd like to spawn separate kernel threads (tasks) to execute syscall asynchronously. Specifically, a user thread issues a syscall, goes into kernel, save the syscall number and arguments somewhere in the kernel address space, but does not execute the syscall. A kernel thread which is different from the user thread, will fetch the syscall number and arguments to execute the syscall on behalf of the user thread.
But for file operations such as read, the kernel thread is not aware of the open files of the user threads. For example, if the user thread opens a file and get a file descriptor, then it issue a read() syscall. The kernel thread cannot execute the read() on behalf of the user thread by just using the file descriptor. Thus I need some way to allow the kernel thread share the open files information with the user thread, such that the kernel thread will have the context of the open file to execute read(). I tried to pass the files_struct of the user thread's task_struct to the kernel thread, but it didn't help, read() returns a EFAULT error.
Can anyone give me some suggestions on how to make a kernel thread share the open files with a user thread? Or more straightforward how to execute the read() syscall in the example above in kernel thread? Thank you very much!

--Louis

Hi there everybody,

I am getting really frustrated on a far to trivial problem. I am running ubuntu in virtual box on a windows 7 64bit machine. By default the screen has a resolution of 640x480 and thus only shows the upper left corner of the actual screen, meaning I can't see the entire screen. I was able to figure out, that I have to install guest additions but as soon as I go to devices -> install guest additions I get an error, that the medium couldn't be placed into the drive. It further asks me whether I want to force it to be mounted but if I say "yes" nothing else happens.

Any chance there is a simple way to solve this problem or is this really such a complicated issue?

Furthermore I would prevent linux from going into standby. Actually the settings say, that it will never go to suspend but it does so after it wasn't used for approx=. 5minutes or so.

Thank you guys very much for helping me getting rid of my newbeness :P

Was running Windows 8.1 Pro till it got sick and died. I managed to install Ubuntu 14.04 on my sick computer over Windows wiping it out.

I first installed Linux Mint and downloaded Ubuntu. Somehow I was able to verify checksums or MD5Sums. I think my age is catching up with me and my mind doesn't work like it used to.

How do I find the MD5sum of a downloaded iso file. I've downloaded debian-7.8.0-amd64-DVD-1-3.iso's and both update DVD's as well. I've located the MD5Sum files on the Mirror. Now, how do I compare those numbers/letters with the iso's I've downloaded.

I know I need to run a program to compute the MD5 but can't find it in the menu. I see I need to read man pages and info pages, but can't find them either.

A brain is a terrible thing to waste, but mine needs help.

Thanks,
Stephen

I'm trying to figure out if find could do this. I have a folder with 1000 files. I want to delete 150 files on that folder regardless of timestamp and filename. Is there a tool, command or option on find that could do this, please let me know.

Combining mtime or ctime to find is not advisable since it will not count the files or even if there are matches, I would still need to sum up the files until I reach 150 files.

Any suggestions?

I am running xubuntu 11.10, fully updated, on an Acer 250 netbook (1GB ram, 1.8 GHz clock, single core Atom processor, if you can believe it). Runs pretty well, I think. So much so that I have decided to migrate from Windows to Linux.

My first question to the forum is this: I have set the Thunar file explorer to show hidden files. However, hidden files still don't show up on various File Open or Browse... dialogs.

How can I set up xfce or xubuntu to always display .hiddenfiles in Open... or Browse... dialogs?

Problem comes up when I want to edit some .config file or run the alacarte Main Menu editor and have to specify some long path to an executable in a hidden directory (as in wine). I have to enter the file name manually, which gets to be a problem for my thumb-fingered typing.

Hi,

I have an tar.gz file which when right click extract here on my ubuntu computer is extracted without issue. I have all the folders and all the files (links and one executable) in them.
But when i transfert this tar.gz to another system and use the command :
Code:

tar zxvf nameofthefile.tar.gz

I see in the terminal things like that :
Code:

usr/bin/unzip/lzop        
usr/bin/xargsbin/mountpoin
usr/bin/telnet
bin/pipe_prog
usr/bin/lzma        
bin
usr/bin/sort

which mean that the files must be extracted but when using "ls" intot he folders they are empty. All the links are not here and only the executable is extracted.

When i copy back the archive from the new system to my ubuntu system and extract it all the files are here without issue. Why is it only creating the folders and not extracting the links ?