Copying Files and Copying Directories on Linux

29/12/2020
Linux is a place that can do amazing things when performing almost any task. For enjoying the full power of Linux, it’s always a good idea to have the knowledge of some basic tricks and command, right? Today, let’s have a look at the file copying command on Linux.

File copying

Before we start the guide, it’s time for a short note on what Linux understands by telling a file or folder. In Linux, each and every folder is known as “directory”. A directory can contain other directories and files of any size given that the file size enough to fit in the storage device.

When you want to copy a file/folder, you have to clarify it enough to the system so that it doesn’t mess things up. It’s also a wonderful thing that whenever you copy/move file from one drive or another, you’ll still be putting them into a folder!

Copying tricks

For copyping, we’ll be using “cp” command. This is the basic “cp” structure –

cp [parameter] “source_file_directory” “target_file_directory”

If you want to copy a file to another directory, you have to run the following commands. Note that I’m using “~/Downloads/testDir/” with 3 test files as the demo for this guide.

cd ~/Downloads/testDir

# Copy all the available files to “~/Desktop/testDir1” directory

cp * ~/Desktop/testDir1

Here, “cp” is the associated command for copying file from one directory to another. It’s just a short term of “copy”. There are some other available options like –

  • -i – Interactive copy mode. If the program finds out any confliction (file already exists etc.), it will ask your action on the situation.
  • -r – Recursive. This option will copy all the included files & directories to the destination. It will also preserve the tree structure of the source directory.
  • -v – Verbose mode. This is useful if you want to get feedback that the copy task is ongoing well. For each question, there are 2 available answer – y (Yes) and n (No).
cp -v * ~/Desktop/testDir1/

It’s recommended that you use these parameters most of the time for the best feedback during copying process.

cp -irv ~/Desktop/testDir1/

Copying an entire directory

Now, let’s think of a situation when you need to copy all your files and directories (folders) into the destination directory. Maybe you’re thinking to use the same trick as above, right?

Here is a test run of the command where I’m trying to copy all the files and directories under “~/Downloads/” into a created subdirectory “sub/”. After running this command –

cp * sub/

The result is this –

Horrific, right? Everything is alright and “cp” should have copied everything into that directory. What’s the problem?

The answer we already discussed above. Remember the “cp” parameter “-r”? It tells to perform the task recursively – copy all the sub-directories and files from the source to destination.

Let’s fix it right away! Run the fixed command –

cp -vr * sub/

Now, everything looks just fine and working.

An interesting thing to note that the destination sub-directory will also be copied within itself.

As you can see, everything of the “Downloads” directory including the “sub” sub-directory is inside the “sub” directory.

Just like that, if you want to copy an entire directory to another directory, use the “-r” parameter. For example, I’ll be copying “~/Downloads/” to “/Desktop/testDir1/”.

cp -vr ~/Downloads/ ~/Desktop/testDir1/

Hopefully, your copying experience with Linux has improved enough. Enjoy!

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