How to extract .tar.gz files in Linux

Using compressed archives in .tar.gz format keeps software releases, configuration backups, and log bundles together while reducing disk usage and transfer time on Linux systems. Extracting these archives reliably restores the original directory tree, which is essential for reproducible builds and disaster recovery.

A .tar.gz file combines the tar archiver with gzip compression: tar groups many files and directories into a single stream, then gzip compresses that stream into a smaller file. On most Linux distributions, the tar command understands this combination natively, so a single invocation can both decompress and unpack the archive using options such as –extract, –gzip, and –file.

Extraction usually runs as an unprivileged user, but unpacking into system paths or overwriting existing data can still cause problems if the wrong directory is chosen. Checking the archive type, previewing its contents, and extracting into a dedicated target folder reduce the risk of accidental overwrites and make it easier to verify that the expected files are present.

1. Open a terminal on the Linux system.

   $ whoami
   root

2. Change to the directory that contains the .tar.gz archive.

   $ cd /root/sg-work/archives
   $ ls
   destination
   single.txt.xz
   source
   source.tar.bz2
   source.tar.gz
   source.tar.xz
   target
   target-xz

3. Confirm that the file is a gzip-compressed archive (optional).

   $ file source.tar.gz
   source.tar.gz: gzip compressed data, from Unix, original size modulo 2^32 10240

   Output mentioning gzip compressed data indicates a standard .tar.gz or .tgz archive.

4. Preview the contents of the archive without extracting them (optional).

   $ tar --list --gzip --file=source.tar.gz
   source/
   source/reports/
   source/reports/report.txt
   source/beta.log
   source/alpha.txt

   Short option form for listing is tar -tzf archive.tar.gz, where t lists, z enables gzip, and f specifies the archive file.

5. Create a dedicated directory where the files will be unpacked (optional).

   $ mkdir -p target

   Using a separate directory keeps extracted files grouped and avoids mixing them with unrelated data.

6. Extract the .tar.gz archive into the target directory.

   $ tar --extract --gzip --verbose --file=source.tar.gz --directory=target
   source/
   source/reports/
   source/reports/report.txt
   source/beta.log
   source/alpha.txt

   Options for tar.

   $ tar --help
   Usage: tar [OPTION...] [FILE]...
   GNU 'tar' saves many files together into a single tape or disk archive, and can
   restore individual files from the archive.
   
   Examples:
     tar -cf archive.tar foo bar  # Create archive.tar from files foo and bar.
     tar -tvf archive.tar         # List all files in archive.tar verbosely.
     tar -xf archive.tar          # Extract all files from archive.tar.
   
    Main operation mode:
     -A, --catenate, --concatenate   append tar files to an archive
     -c, --create               create a new archive

7. Verify that the expected files were unpacked into the target directory.

   $ ls -R target
   target:
   source
   
   target/source:
   alpha.txt
   beta.log
   reports
   
   target/source/reports:
   report.txt