Compression reduces file to a fraction of its original size so the file can more efficiently store or transmit.
gzip -c test.txt > test.txt.gz #compress
gunzip test.txt.gz #decompress
zcat test.txt.gz #view
less test.txt.gz #view pagewise
bzi2 -c test.txt > test.txt.bz2 #compress
bunzip2 test.txt.bz2 #decompress
bzcat test.txt.bz2 #view
less test.txt.bz2 #view pagewise
zip test.txt.zip test.txt #compress
unzip test.txt #decompress
Backup
#backup
tar -cvf filename.tar testfile
#backup with zip
tar -czvf filename.tar.gz testfile
#backup with gzip
tar -cjvf filename.tar.bz2 testfile
#uncompress tarfile
tar -xvf filename.tar
#uncompress .bz tarfile
tar -xjvf filename.tar.bz2
#uncompress .gz tarfile
tar -xzvf filename.tar.gz
c -create
v -verbose
x -extrat
f -filename
z -compress the tar file with gzip
j -compress the tar file with bzip2
#more
lzma
rar
7zip
lbzip2
xz
lrzip
PeaZip
arj
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