Ardika Sulistija: Created page with " It is always good to have a backup. You can use the cp command, or you can archive it using tar and compress it using gzip, that way you will save some space. ====Archiving and Compression==== ---- This will archive and compress using gzip! Be sure to end in '.gz' and use -z, -z is for gzip: tar -zcvf [newArchiveName.tar.gz] [file/dir you want to archive] This will archive files and compressing using bzip2! Be sure to end name with '.bz2' and use -j. -j is for b..."

2024-08-20T05:41:00Z

Created page with " It is always good to have a backup. You can use the cp command, or you can archive it using tar and compress it using gzip, that way you will save some space. ====Archiving and Compression==== ---- This will archive and compress using gzip! Be sure to end in '.gz' and use -z, -z is for gzip: tar -zcvf [newArchiveName.tar.gz] [file/dir you want to archive] This will archive files and compressing using bzip2! Be sure to end name with '.bz2' and use -j. -j is for b..."

New page

It is always good to have a backup. You can use the cp command, or you can archive it using tar and compress it using gzip, that way you will save some space.

====Archiving and Compression====
----

This will archive and compress using gzip! Be sure to end in '.gz' and use -z, -z is for gzip:
tar -zcvf [newArchiveName.tar.gz] [file/dir you want to archive]

This will archive files and compressing using bzip2! Be sure to end name with '.bz2' and use -j. -j is for bzip:
tar -jcvf [newArchive.tar.bz2] [file/dir]

I.e: backed up your home directory and stored it into Backups directory, perserves permissions, verbose, gzip/compressions, etc.:
tar -cvpzf ~/Backups/backup.tar.gz ~/

How I backed up my /etc/letsencrypt directory, did the same to my /var/www:
DATE=$(date +"%d-%b-%Y"); tar -zcvf ./letsencrypt-$DATE.tar.gz letsencrypt/

* NOTE, when you extract the files it will create the file where you are unless you specify.

====How to extract .tar.xz file====
tar -xf linux-5.6.13.tar.xz
tar -xvf linux-5.6.13.tar.xz
tar -Jxvf linux-5.6.13.tar.xz
## extract tar.xz files aka .txz file ##
tar --xz -xf archive.txz

====Archiving Files====
----

tar - an archiving utility that DOES NOT do compression. Allows us to create archive. Collects a number of files/dir into a single file for backup/archiving.

To archive files, where c -> create ; v -> Verbose ; f -> file or archive device; * -> all files and directories:
tar -cvf [newArchive.tar] [dir/file you want to archive]

To eXtract the contents from the archived file:
tar -xvf [Archive.tar]

To show the contents of the archive folder (-t):
tar -tvf [Archive.tar]

To add a file/dir to an archived file:
tar -rvf [Archive.tar] [file/dir]

To perserve the permissions of the original file:
tar -p

To compress/uncompress the file size using gzip (Recommend you SHOULD do it, why not):
tar -z

Real world example from work: eXtract, compress(gzip), verbose, file
tar -xzvf [archive.tar.gz] [dir/file]

====File Compression====
----

gzip - compresses quicker (z)

Compress file:
gzip [file] [file]

Eextract/normalize file
gzip -d [file.gz]

Provide a compression information (a compression/uncompression ratio):
gzip -l [file.gz] ...

To decompress:
gunzip -d [file.tar.gz]

How to view compressed file:
* You can use gunzip then cat it:
gunzip scan.runzero.gz
gunzip -d scan.runzero.gz
gzip -d scan.runzero.gz

* You can also use zcat:
zcat scan.runzero.gz

You can even redirect it to a file like: zcat scan.runzero.gz > file
* zless:
zless scan.runzero.gz

----

bzip2 - bzip2, bunzip2 - a block-sorting file compressor. bzip2 compresses files using the Burrows-Wheeler block sorting text compression algorithm, and Huffman coding. Bzip2 uses LESS SPACE for the compressed file (j).

Compresses file
bzip2 [file]

Extract files from bzip
bunzip2 [file.bz2]

Archiving and Compression - Revision history