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oam/knowledge base/tar.md
Michele Cereda 15369e804b chore(gitlab): improve notes about backups
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Tar

  1. TL;DR
  2. Options of interest
  3. Further readings
    1. Sources

TL;DR

# Create archives.
tar czvf 'directory.tar.gz' 'source-directory'
tar -capvf 'archive.tar.bz2' 'directory1' 'directory2' 'file1' 'fileN'

# List the content of archives.
tar tf 'archive.tar'
tar -tf 'archive.tar' 'file-in-archive'

# Test archives by reading their contents or extracting them to stdout.
tar tf 'archive.tar' > '/dev/null'
tar tOf 'archive.tar' > '/dev/null'

# Extract archives.
tar xpf 'archive.tar'
tar xapf 'archive.tar.gz'
tar -xjpOf 'archive.tar.bz2' 'file-in-archive'

Options of interest

Short Long Description
-a --auto-compress use archive suffix to determine the compression program
-c --create create a new archive; directories are archived recursively, unless the --no-recursion option is given
-C --directory DIR change to DIR before performing any operations; this option affects all options that follow
-f --file FILE use archive file or device FILE; if not given, tar will first examine the environment variable TAPE and default to the compiled-in default
-r --append append files to the end of an archive
-t --list list the contents of an archive; arguments are optional, but when given they specify the names of the members to list

Further readings

Sources