How to extract .tar.gz files in Linux

A downloaded source release, backup, or log bundle often arrives as a .tar.gz archive. Extracting it without checking the stored paths can scatter files into the current directory or overwrite names that are already there, so inspect the archive before writing anything to disk.

A .tar.gz file is a tar archive compressed with gzip. GNU tar can read compressed archive files directly, and the -z option keeps the gzip layer explicit when listing or extracting. The -C option changes to the destination directory before files are restored.

Archive members may include a top-level directory, nested paths, or a single file at the archive root. Use a dedicated destination directory unless the archive layout is already known, and use elevated privileges only when the destination path requires them. Archives ending in .tgz use the same commands as .tar.gz files.

1. List the archive members before extracting.

   $ tar -tzf source.tar.gz
   source/
   source/alpha.txt
   source/beta.log
   source/reports/
   source/reports/report.txt

   The listed member names are the exact paths needed when extracting only one file or subdirectory later.

2. Create a destination directory for the extracted tree.

   $ mkdir -p extracted

3. Extract the archive into the destination directory.

   $ tar -xvzf source.tar.gz -C extracted
   source/
   source/alpha.txt
   source/beta.log
   source/reports/
   source/reports/report.txt

   -C extracted writes the archive members under extracted instead of the current directory. GNU tar can also read this regular archive with tar -xvf source.tar.gz -C extracted because it detects the compression format automatically, but -z keeps the gzip layer visible.

4. Verify the restored directory tree.

   $ find extracted -maxdepth 3 -print
   extracted
   extracted/source
   extracted/source/reports
   extracted/source/reports/report.txt
   extracted/source/beta.log
   extracted/source/alpha.txt

   Many archives already contain a top-level directory such as source. Extracting into a dedicated destination directory avoids mixing restored paths with unrelated files.

5. Create a destination directory for a single-member extraction.

   $ mkdir -p single

6. Extract the exact member path when the full tree is not needed.

   $ tar -xvzf source.tar.gz -C single source/reports/report.txt
   source/reports/report.txt

   Replace source/reports/report.txt with the exact member name shown by the earlier tar -tzf listing.

7. Check that only the selected member path was restored.

   $ find single -maxdepth 4 -print
   single
   single/source
   single/source/reports
   single/source/reports/report.txt