With the help of the “-d” option, we can decompress the “” file into original file format “.txt”. To decompress the data, we can use the “-d” option.Įxplanation: In the sample directory, we are having the compressed file “” (refer screenshot 6 (a)). We are having the functionality to decompress the data compress data via gzip. In such a way, we can decompress the “.gz” file. In gzip, we can compress the multiple files as well as directories. It is having a high compression ratio but less compression speed. In the above example, we have used “-9” option. It will need more CPU | Computation power to execute the process | task.Įxplanation: As per the compression speed and compression ratio, we can use the different options in the gzip command. Note: If we will use the high compression ration option in gzip command.
The option “-9” having the high compression ration but the compression speed is less. Using “-1” is the high compression speed but low compression ratio. if the compression ratio is high then the compression speed is less or the compression ratio is less than the compression speed is high. In gzip, the compression ratio and speed of compression are inversely proportional to each other i.e. As per our requirement, we can change in compression ratio and speedup the compression speed. In gzip, there are different compression rations. Using the “-r” option in gzip command, we can compress all the files and subdirectories in it (refer screenshot 5 (b)). In the log directory, we are having the multiple files and subdirectories in it (refer screenshot 5 (a)). In the sample directory, we are having a log directory. To compress the directory, we need to use the “-r” option in gzip command. The gzip will recursively compress the whole directory structure and compress all the files in the directory and it is subdirectories as well. We are compressing all the files(refer screenshot 4 (b)). In gzip, we are having the functionality to compress the multiple files.Įxplanation: In the sample directory, we are having the multiple files (f1, f2, f3, f4 and f5) (refer screenshot 4 (a)). Now we are compressing the file1.txt file using verbose option “-v”. If you want to output the output with name and percentage process for each file of compression or decompression then we will use the “-v” option with gzip command.Įxplanation: In the sample directory, we are having the file1.txt file. As per the above command, we are using the “-c” keyword which tells gzip command to write on the standard output and redirect to the output file (refer screenshot 2 (b)). We are compressing the file but keeping the original file as it is. If you want to keep the original file while compressing then we can use the “-c” keyword with gzip command.Įxplanation: In the sample directory, we are having the file.txt file (refer screenshot 2 (a)). The gzip keeps the original file information of timestamp, ownership and name of the file. We are compressing the file by the default method of gzip. After compression, the original file will remove and converted in compress format.Įxplanation: In the sample directory, we are having the samle.txt file (refer screenshot 1 (a)).
Simply we can compress the single file with any option. Examples to Implement of Linux gzipīelow are the examples of Linux gzip: 1. But if you want to compress the archival data or collection of data then we can compress in a single tar archival. With the help of header, body and footer it will help to compress the data or file.Įssentially gzip is normally used to compress the single files. In the footer, it is containing a CRC-32 checksum, 8-byte footer value and the length of the original uncompressed data. In the body, the compressed payload containing a DEFLATE. If needed the extra headers are allowing by the header flags. While compression of any data or file, we need to consider different things like a 10-byte header, magic number (1f 8b), the DEFLATE compression method, 1-byte of header flags, 4-byte timestamp, compression flags and the operating system ID. It is a combination of LZ77 and Huffman coding. How Linux gzip Command Works?īasically gzip algorithm is based on “DEFLATE” algorithm. Gzip.Īs per the above gzipsyntax, we need to provide the different options in gzip command and provide the file or directory to whom we need to compress.
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