hello, i'm a new linux user, it's hard to install the program, everytime i install something comes warning invalid install operation. please help me learn and solve it

Hi ryu-id,

Welcome to LQ!

It would help if you could be more specific. Why don't you start with the biggest problem you are having. And which distro are you using?

how to: show your work, just like in math class. so we can better see your mistakes, just like in math class. thanks

In other words, how exactly are you trying to install these programs.

Also, what Linux distro/version are you using.

If you have not done so, you may wish to read this: https://www.linuxquestions.org/linux...Ask_a_Question

Welcome to LQ.

I want my data as much as 40GB. data consists of files with extension .xlsx, .docx, .exe, .rar. data is lost and I want to restore it. when i write "sudo apt-get isntall my tesdisk unable to open package out warning" dpkg: error: requested operation requires superuser privilege

all give you superuser privileges, a password is needed to acquire it.
to find out what groups user has
to see what groups system has
if you are not in the sudo group or wheel group depending on your Distro, then you have to go su, with a password to give your user the group, log out then in again to activate the group.

Since you're using Ubuntu,
sudo apt-get install whatever_it's_called
will work to install a program. Otherwise, there's always the software installation program in the menu, which is easier still.

Let's look at that data. Of course, if you have masses of Windows stuff, it may be easier to stick with Windows!

.docx LibreOffice Writer will import that Word file, although the layout may need tweaking, depending on how different the fonts are. There's a set of fonts called Liberation where the letters are the same size as in Times and Ariel to minimise that problem.

.slsx LibreOffice will import the spreadsheet data, but not the formulae.

.rar The archive manager you'll find in the menu may be able to open that, but it probably won't. If it can't, you can convert it to a Linux format.
1. Try "whereis unrar" in the terminal to check whether you have unrar. If you haven't, install it.
2. Create a temporary folder (let's call it temp) using your file manager and copy the .rar file into it. Don't actually move it, as you want to keep it until the following steps are safely completed.
3. In the terminal emulator,
cd temp
unrar e your_file.rar
4. To prevent the .rar file getting put into the new archive,
rm your_file.rar
4. Run the archive manager and re-archive the contents of temp. The program has a help option that will show you what to do.

.exe That, of course, is just a Windows program. You may be able to run it in Linux using Wine, or maybe not.
https://www.winehq.org/
To see what alternative programs there are, look at
https://linuxappfinder.com/alternatives

I'm confused by this update.

Are you trying to recover data from a Windows disk?

You originally asked about installing, however that is different than recovery of data and/or programs.

Can you clarify what your problem is?