How to check whether your site is served in gzip or not by using cURL linux command:

curl -H "Accept-Encoding: gzip" -I https://www.google.com

If you find the bloew line in the returned response, your site supports gzip:

content-encoding: gzip

NOTE: gzip can speed up your site speed tremendously, sometimes by 90% compression! It also affects your google rank.

#linux #curl #gzip #seo

In order to compress a file with level of 9 (maximum level of compression), you need to
set an ENV variable. In order to not clobber the file system environments you can use pipe in your command:

tar cvf - /path/to/directory | gzip -9 - > file.tar.gz

#tar #gzip #compression_level

tarfile is a python library to read and write gzip`/`bz2 compressed files.

How to read a gzip compressed tar archive and display some member information:

import tarfile
 tar = tarfile.open("sample.tar.gz", "r:gz")
 for tarinfo in tar:
     print tarinfo.name, "is", tarinfo.size, "bytes in size and is",
     if tarinfo.isreg():
         print "a regular file."
     elif tarinfo.isdir():
         print "a directory."
     else:
         print "something else."
 tar.close()

Create a compressed file:

with tarfile.open(dst, "w:gz") as tar:
     print("Archiving " + src + " into " + dst)
     tar.add(src, arcname = os.path.basename(src))

NOTE: the flag of w:gz opens the destination in write mode. Used to create a new tar file.

#python #tarfile #tar #bz2 #gzip