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work with tar.gz files

tar is a buckup
gz is a zip file
bz2 is a zip file

unpack a file

if the file is a: filename.tar type: tar xvf filename.tar
if the file is a: filename.tar.gz type: tar xvfz filename.tar.gz
if the file is a: filename.tar.gz and you like to make a filename.tar of it type: gzip -d filename.tar.gz
if the file is a: filename.tar.bz2 type: tar jxvf filename.tar.bz2
make a tar file type: tar cvf filename.tar *
for filename you can take evry name you like
the * meens that it backups ervy file and directorie in the directorie where you are at that moment.
make a tar.gz file if you have allready a filename.tar type: gzip -9 filename.tar
now you have a filename.tar.gz
the -9 is the power of zipping. you can use 0 to 9 here
9 is good zip and slow 0 is bad zip but fast
make a tar.gz file
type: tar cvfz filename.tar *

here is de cvfz the command to make a tar.gz file and the * is de pad of the file's an directories
you also can type:
tar cvfz filename.tar.gz /root/mpg now it backup's and zips all the files and diretories in de dir /root/mpg
make a tar.bz2 file
type: tar jcvf filename.tar.bz2 *

here is de jcvf the command to make a tar.gz file and the * is de pad of the file's an directories
you also can type:
tar jcvf filename.tar.gz /root/mpg now it backup's and zips all the files and diretories in de dir /root/mpg