tar xvzf file-1.0.tar.gz - tgfo uncompress a gzip tar file (.tgz or .tar.gz)
tar xvjf file-1.0.tar.bz2 - to uncompress a bzip2 tar file (.tbz or .tar.bz2) to extract the contents.
tar xvf file-1.0.tar - to uncompressed tar file (.tar)
tar xvC /var/tmp -f file-1.0.tar - to uncompress tar file (.tar) to another directory
x = eXtract, this indicated an extraction c = create to create ) 提取
v = verbose (optional) the files with relative locations will be displayed.
z = gzip-ped; j = bzip2-zipped z 对应 gzip类型压缩包 j对应bzip2类型压缩包
f = from/to file ... (what is next after the f is the archive file) f 代表 from哪个压缩包
C = directory. In c and r mode, this changes the directory before adding the following files. In x mode, changes directoriy after opening the archive but before extracting entries from the archive. C 代表
The files will be extracted in the current folder (most of the times in a folder with the name ‘file-1.0‘).文件将被解压到与压缩包同一目录中。（很多时候被解压到 file-1.0文件夹中）
