Notes:

tar & gzip

• To zip up an entire directory, go to its parent directory, then type:
  
  > tar cvf <outputFileName>.tar <directory>
  
  For example:
  
  > tar cvf test.tar myDir

• To zip up files, go to the directory where the files belong, and type in:
  
  > tar cvf <outputFileName>.tar <file1> <file2> ...
  
  For example:
  
  >tar cvf test.tar file1.txt file2.jpg file3.png

• "Tar" only groups the files together, but does not compress them. To compress, type in:
  
  > gzip <tarFile>.tar
  
  For example:
  
  > gzip test.tar
  
  And test.tar.gz will be outputted.

• To unzip test.tar.gz, type in:
  
  > gunzip test.tar.gz
  
  And the file test.tar will be extracted.

• To untar test.tar, type in:
  
  > tar xvf test.tar