To compress a single file invoke the gzip command followed by the filename

If you want to keep the input (original) file, use the -k option

Another option to keep the original file is to use the -c option which tells gzip to write on standard output and redirect the output to a file.

Use the -v option if you want to see the percentage reduction and the names of the files that are being processed

You can also pass multiple files as arguments to the command. For example, to compress the files named file1, file2, file3, you would run the following command

To compress all files in a given directory, use the -r option

gzip allows you to specify a range of compression levels, from 1 to 9. -1 or --fast means fastest compression speed with minimal compression ratio, -9 or --best indicates the slowest compression speed with maximum compression ratio. The default compression level is -6.

To create a .gz file from the stdin, pipe the output of the command to gzip. For example, to create a Gzipped MySQL database backup you would run

Another command that you can use to decompress a Gzip file is gunzip . This command is basically an alias to gzip -d.

when compressing a file, the -k option tells gzip to keep the input file, in this case, that is the compressed file

To decompress multiple files at once pass the filenames to gzip as arguments

When used with -d and -r options, gzip decompresses all files in a given directory recursively

When used with the -l option, gzip shows statistics about the given compressed files

To get more information, add the -v option

When a compressed file contains several individual files, the uncompressed size and CRC reported by the --list option are for the last member only. To get the uncompressed size for all members, useWhen a compressed file contains several individual files, the uncompressed size and CRC reported by the --list option are for the last member only. To get the uncompressed size for all members, use

-f option : Sometimes a file cannot be compressed. Perhaps you are trying to compress a file called “myfile1” but there is already a file called “myfile1.gz”.

compress the following file

to decompress the file using gzip command by giving -d option

force a file to be compressed

to keep the uncompressed file

compress every file in a folder and subfolders

to test the validity of a compressed file

to change the compression level. to get the minimum compression at the fastest speed

to set the compresion level.to get the maximum compression at slowest speed

lists all the compressed file contents

compress all files recursively

Explanation:
Compresses file.txt to file.txt.gz and removes the original file.

Explanation:
Each file is compressed separately into file1.txt.gz, file2.txt.gz, and file3.txt.gz.

Explanation:
Compresses all .txt files in the current directory.

Explanation:
Compresses file.txt to file.txt.gz but keeps the original file.

Explanation:
Uses the highest level (-9) to maximize compression.

Explanation:
Uses the lowest level (-1) for fast compression (less compression).

Output Example:

  compressed   uncompressed  ratio uncompressed_name
       12345         67890   81%   file.txt
Explanation:
Shows compression ratio and file details.

Explanation:
Outputs compressed data to the terminal without saving it.

Explanation:
Finds all files in /path/to/directory and compresses them.

Explanation:

• tar archives foldername/ into archive.tar.gz in one step.
• -z uses gzip for compression.

Compresses files to save space using GNU zip compression.

Decompresses the file.