Tar command and tar for full backup and incremental backup

Run the tar command and run the tar command to implement full backup and incremental backup. First, find out what full backup, incremental backup, and differential backup are. In short, it can be understood as follows: full backup: a backup is performed on all files. Incremental Backup: the difference between this backup and the previous backup. Differential backup: Backup based on full backup. I .. Information & tar command use and tar to implement full backup and incremental backup first find out what is full backup, incremental backup, differential backup. In short, it can be understood as follows: full backup: a backup is performed on all files. Incremental Backup: the difference between this backup and the previous backup. Differential backup: Backup based on full backup. A tar command [plain] # Create a test folder and file [root @ serv01 web] # cd/data [root @ serv01 data] # ls [root @ serv01 data] # mkdir/work [root @ serv01 data] # mkdir/work/upload [root @ serv01 data] # cd/work/upload/[root @ serv01 upload] # touchaa0133, 52.16.txt [root @ serv01 upload] # ls aa01.txt aa02.txt aa03.txt aa04.txt aa05.txt # Create a compressed package [root @ serv01 data] # tar-cvf upload01.tar/work/upload/tar: removing leading '/' from member names/work/upload // work/upload/aa03.txt/work/upload/aa01.txt/work/upload/aa04.txt/work/upload/aa05.txt/work/ upload/aa02.txt # view the files contained in the package [root @ serv01 data] # tar-tf upload01.tar work/upload/aa03.txt work/upload/aa01.txt work/upload/aa04.txt work/upload/aa05.txt work/upload/aa02.txt # delete data, simulate data loss [root @ serv01 data] # rm-rf/work # decompress [root @ serv01 data] # tar-xvf upload01.tar-C/work/upload/aa03.txt work/upload/aa01.txt work/upload/aa04.txt work/upload/aa05.txt work/upload/aa02.txt [root @ serv01 data] # ls/work upload [root @ serv01 data] # ls upload01.tar # file path [root @ serv01 data] # tar-cPvf upload02.tar/work/upload // work/upload/aa03.txt/work/upload/aa01.txt/ work/upload/aa04.txt/work/upload/aa05.txt/work/upload/aa02.txt # the file path [root @ serv01 data] # tar-xPvf upload02.tar/work/ upload // work/upload/aa03.txt/work/upload/aa01.txt/work/upload/aa04.txt/work/upload/aa05.txt/work/upload/aa02.txt [root @ serv01 data] # ls /work/upload # The f parameter is not required, you can use redirection to solve [root @ serv01 data] # tar-cv upload03.tar/work/upload/tar: upload03.tar: Cannot stat: No suchfile or directory tar: removing leading '/' from member names/work/upload // work/upload/aa03.txt/work/upload/aa01.txt/work/upload/aa04.txt/work/upload/aa05.txt/work/ upload/aa02.txt work/upload/00007550000000000000000000000000121766767060120445 ustar rootrootwork/upload/aa03.txt00006440000000000000000000000000121766767060133170ustar rootrootwork/upload/aa01.txt00006440000000000000000000000000121766767060133150ustar rootrootwork/upload/aa04.txt00006440000000000000000000000000121766767060133200ustar rootrootwork/upload/aa02.txt00006440000000000000000000000000121766767060133160ustar rootroottar: exiting with failurestatus due to previous errors redirect to upload03.tar [root @ serv01 data] # tar-cv/work/upload/> upload03.tar: removing leading '/' from member names/work/upload // work/upload/aa03.txt/work/upload/aa01.txt/work/upload/aa04.txt/work/upload/aa05.txt/work/ upload/aa02.txt # Delete the directory [root @ serv01 data] # rm-rf/work/# decompress, specify the input source [root @ serv01 data] # tar-xv-C/ File1 # view the file. you can see that the list of all configuration files already exists (note the file path) [root @ serv01 data] # vim file1 folder creates conf01.tar, then T specifies the file [root @ serv01 data] # tar-cPvf conf01.tar-Tfile1 [root @ serv01 data] # tar-tf conf01.tar [root @ serv01 data] # ls-h conf01.tar- l-rw-r -- r -. 1 root 250 K Aug 2 conf01.tar 2 tar command implementation-full backup and incremental backup [plain] [root @ serv01 data] # ls/work/upload/aa01.txt aa02.txt aa03.txt aa04.txt aa05.txt aa06.txt [root @ serv01 data] # rm-rf upload01.tar # This is full backup, unable to implement the incremental backup function [root @ serv01 data] # tar-cPvf upload01.tar/work/upload/# g specify the flag file [root @ serv01 data] # tar-g flag -cPvfupload01.tar/work /upload/tar: /work/upload: directory is new/work/upload // work/upload/aa01.txt/work/upload/aa02.txt/work/upload/aa03.txt/work/upload/aa04.txt/work/upload/aa05.txt/work /upload/aa06.txt [root @ serv01 data] # vim flag # Create a file [root @ serv01 data] # touch/work/upload/aa07.txt # Change the file [root @ serv01 data] # vim/work/upload/aa02.txt [root @ serv01 data] # tar-g flag -cPvfupload02.tar/work/upload // work/upload/aa02.txt/work/upload/ aa07.txt [root @ serv01 data] # tar-tPf upload02.tar/work/upload // work/upload/aa02.txt/work/upload/aa07.txt [root @ serv01 data] # touch/work/ upload/aa08.txt [root @ serv01 data] # rm-rf/work/upload [root @ serv01 data] # ls/work/upload/aa02.txt aa03.txt aa04.txt aa05.txt aa06.txt aa07.txt aa08.txt [root @ serv01 data] # tar-g flag -cPvfupload03.tar/work/upload // work/upload/aa08.txt # restore full backup, successive recovery # data loss [root @ serv01 data] # rm-rf/work/* [root @ serv01 data] # ls/work/# restore full backup [root @ serv01 data] # tar-g flag -xPvfupload01.tar/work/upload // work/upload/aa01.txt/work/upload/aa02.txt/work/upload/aa03.txt/work/upload/aa04.txt/work/upload/ aa05.txt/work/upload/aa06.txt # the data returned [root @ serv01 data] # ls/work/upload/aa01.txt aa02.txt aa03.txt aa04.txt aa05.txt aa06.txt contains aa02.txt, no [root @ serv01 data] # cat/work/upload/aa02.txt restore file found. [root @ serv01 data] # tar-g flag -xPvfupload02.tar/work/upload/work/ upload/aa02.txt/work/upload/aa07.txt contains the aa02.txt file, the content is returned. [root @ serv01 data] # cat/work/upload/aa02.txt hello world logs: restore the file, and [root @ serv01 data] # tar-g flag -xPvfupload03.tar/work/upload/tar: deleting '/work/upload/aa01.txt'/work/upload/aa08.txt [root @ serv01 data] # ls/work/upload/aa02.txt aa03.txt aa04.txt aa05.txt aa06.txt aa07.txt aa08.txt