tar -jxvf filename.tar.bz2where j means it's for bzip2, xz, lzip and lzma compress extension.
To extract a tar.gz file, the command is:
tar -zxvf filename.tar.gzwhere z means it's for gzip, gunzip and ungzip compression extension
x is extract files from filename.tar.gz
v is to list all the file proccessed
f is to extract filename.tar.gz
if you want to specify the directory to where the extracted file go, use this command:
tar -xvzf file.tar.gz -C directorywhere C means put extracted file to directory