how to extract tar.7z files from command line?

Yes - the package p7zip / p7zip-full provides a command-line application to zip/unzip 7z files. The command is simply 7z.

You can combine a 7z / tar call using a pipe:

7z x -so yourfile.tar.7z | tar xf - -C target_dir

where target_dir is a already-existing directory.

Install p7zip-full if not already installed:
```
sudo apt-get install p7zip-full
```
execute this command to extract .tar.7z file(go to directory where is your file, if myfile.tar.7z is your file name):
```
7za x myfile.tar.7z
tar -xvf myfile.tar
```
That's it. Actually first command extracts in .tar file then next command extracts it completely.

Make sure that 7zip is installed, if not, just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command(s) below:

sudo apt-get install p7zip

To install the command line utility do:

sudo apt-get install p7zip-full

Once done you can do the following to extract:

7z e <file_name>.tar.7z

To extract with full paths:

7z x <file_name>.tar.7z

To specify a path to extract to:

7z x <file_name>.tar.7z -opath

7z does not allow spaces between -o and path.

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