tar xvzf file.tar.gz

#Untar to the specific dirctory -C qualifier for customized directory
#You must cd into the directory containg the file first
tar -xf archive.tar.gz -C /home/linuxize/files
#Untar specific files from  archive.tar.gz
tar -xf archive.tar.gz file1 file2

tar xvzf file.tar.gz

tar -xvzf community_images.tar.gz
Also, to extract in a specific directory

for eg. to extract the archive into a custom my_images directory .

tar -xvzf community_images.tar.gz -C my_images