Tar, Gzip, Bzip2, Zip

Features:
1. Compression utilities (gzip, bzip2, zip)
2. File rollers (the ability to represent many files as one)


Gzip:
Includes:
1. gzip - compresses/decompresses files
2. gunzip - decompresses gzip files

Tasks:
1. compress '1million.txt' file using gzip
a. gzip -c 1million.txt > 1million.txt.gz

Note: gzip auto-dumps to STDOUT, by default

b. gzip -l 1million.txt.gz - returns status information
c. gunzip 1million.txt.gz - dumps to file, and removes compressed version
d. gzip -d 1million.txt.gz
e. zcat 1million.txt.gz - dumps the contents to STDOUT
f. less 1million.txt.gzip - dumps the contents of gzip files to STDOUT


Bzip2:

1. bzip2 -c 1million.txt > 1million.txt.bz2

Note: Bzip2 tends to outperform gzip on larger files
2. bunzip2 1million.txt.bz2
3. bzip2 -d 1million.txt.bz2
4. bzcat 1million.txt.bz2 - dumps contents to STDOUT
5. less 1million.txt.bz2 - also dumps the contents to STDOUT


Zip & unzip:
1. zip filename.zip path/ - general usage
2. zip 1million.txt.zip 1million.txt
Note: zip differs slight from gzip and bzip2 in that the destination file (resultant zip file) is specified before the source
3. unzip 1million.txt.zip


Tar & Gzip/Bzip2:

1. tar -cvf filename.tar path/ - creates a non-compressed archive
2. tar -cvf 1million.txt.tar 1million.txt
Note: tar, requires a small overhead for itself in each file

3. tar -czvf 1million.txt.tar.gz 1million.txt - creates, tar/gzip document
4. tar -cjvf 1million.txt.tar.bz2 1million.txt - creates, tar/bzip2 document
5. tar -tzvf

6. tar -cjvf 1million.txt.tar.bz2 1million.txt testRH5/- creates, tar/bzip2 document for the text file and 'testRH5' directory tree