The article directories

    • Packing compression
      • Pack/unpack
        • Packing and unpacking drill
      • Compress/uncompress
        • 1) `gzip`
        • 2) `bzip2(two)`

Packing compression

  • Packaging compression is a way to back up files in your daily work

  • In different operating systems, the commonly used packaging and compression methods are different

    • WindowsThe commonly usedrar
    • MacThe commonly usedzip
    • LinuxThe commonly usedtar.gz

Pack/unpack

  • tarIs the most commonly used in LinuxThe backupTool, this command canA series of documentsPackaged inIn a big file, you can also put aThe packaged large file is restored as a series of files
  • tarThe command format is as follows:
# package fileTar -cvf Package file tar Package file/path...Unpack the fileTar -xvf Package file. TarCopy the code
  • tarOption to show
options meaning
c Generate archive files and create package files
x Unpack the files
v Lists the details of the archiving process, showing progress
f Specify the name of the file, f must be followed by.tar, so the option must end

Note: the f option must be placed last. The other options can be placed in any order

Packing and unpacking drill

  1. Delete everything under the desktop
  2. Create three blank files01.txt,02.txt,03.txt
  3. Type these three documents into one123.tarThe package
  4. newtarDirectory, and will123.tarMove to thetardirectory
  5. Unpack the123.tar

Compress/uncompress

1) gzip

  • Tar can be used with the gzip command to package and compress implementation files

    • tarOnly packages files, but does not compress them
    • withgzipThe compressiontarThe extension of the packaged file is generally usedxxx.tar.gz

In Linux, the most common compressed file format is XXX.tar. gz

  • intarThere is an option in the command-zYou can callgzip, so that you can easily realize the function of compression and decompression
  • The command format is as follows:
Zip fileTar -zcvf Package file.tar. gz Compressed file/path...Unzip the fileTar -zxvf Package file.tarUnzip to the specified pathTar -zxvf Package file.tar. Gz -c Target pathCopy the code
options meaning
-C Extract to the specified directory. Note: The directory to extract must exist

2) bzip2(two)

  • Tar in combination with the bzip2 command can be packaged and compressed using implementation files (same as gzip)

    • tarYou pack files, but you don’t compress them,
    • withbzip2The compressiontarThe extension of the packaged file is generally usedxxx.tar.bz2

  • The tar command has an option -j to call bzip2, which makes it easy to compress and decompress

  • The command format is as follows:

Zip fileTar -jcvf Package file.tar. Bz2 Compressed file/path...Unzip the fileTar -jxvf Package file.tar.bz2Copy the code