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
2.
decompress '1million.txt.gz'
a.
gunzip 1million.txt.gz - dumps to file and remove the compressed version
b.
gzip -d 1million.txt.gz
c.
zcat 1million.txt.gz - dumps the contents to STDOUT
Bzip2
Includes:
1. compress
'1million.txt' file using bzip
a.
bzip2 -c -v 1million.txt > 1million.txt.bz2
2.
decompress '1million.txt.bz2'
a.
bunzip1 1million.txt.bz2
b.
bzip2 -d 1million.txt.bz2
c.
bzcat 1million.txt.gz - dumps the contents to STDOUT
zip
Includes:
1. compress
'1million.txt' file using zip
a.
zip filename.zip path/ of the files - general usage
b.
zip 1million.txt.zip 1million.txt
Note: zip differs slight from gzip and bzip2 in that
the destination file (resultant zip file) is spacified before the source.
2.
decompress '1million.txt.zip'
a.
unzip 1million.txt.zip
Tar &
Gzip/Bzip2
1. making
archive '1million.txt' file using tar
a.
tar -cvf filename.tar path/ of the files - creates non-compressed archive
b.
tar -cvf 1million.txt.tar 1million.txt
Note: tar, requires a small overhead for itself in
each file
c.
tar -czvf 1million.txt.tar.gz 1million.txt - creates, tar/gzip document
d.
tar -cjvf 1million.txt.tar.bz2 1million.txt - creates, tar/bzip document
e.
tar -cjvf 1million.txt.tar.bz2 1million.txt testRH6/ creates, tar/bzip2
document for the text file and 'testRH6' directory tree
f.
tar -rjvf 1million.txt.tar.bz2 document/ appends, tar/bzip2 document
to display the content.
g.
tar -tzvf 1million.txt.tar.gz
h.
tar -tjvf 1million.txt.tar.bz2
2.
extracting '1million.txt.tar.gz or bz or simple tar'
a.
tar -xvf 1million.txt.tar -C extracted/
a.
tar -xzvf 1million.txt.tar.gz -C extracted/
a. tar -xjvf
1million.txt.tar.bz2 -C extracted/ - -C to create a directory
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