different backup methods in linux with examples.

http://www.linuxserverworldadmin.blogspot.in/2015/03/different-types-of-backup-in-linux.html

Backups 

Create a folder 

[root@client24 ~]# cd /myfolder/ 
[root@client24 myfolder]# mkdir dir1 
[root@client24 myfolder]#touch 1 test_file tom_file 
[root@client24 myfolder]# ls 
1  dir1  test_file  tom_file 

Use the tar command to tape archive the folder. 

[root@client24 ~]# tar -cvf myfolder.tar /myfolder 
tar: Removing leading `/' from member names /myfolder/ 
/myfolder/dir1/ 
/myfolder/tom_file /myfolder/test_file /myfolder/1 
[root@client24 ~]# ls -ld myfolder.tar 
-rw-r--r-- 1 root root 10240 Jul 13 03:07 myfolder.tar 
To zip the tar file. 
[root@client24 ~]# gzip myfolder.tar 
[root@client24 ~]# ls -ld myfolder.tar.gz 
-rw-r--r-- 1 root root 264 Jul 13 03:07 myfolder.tar.gz 
To unzip the tar file 
[root@client24 ~]# gunzip myfolder.tar.gz 
[root@client24 ~]# ls -ld myfolder.tar 
-rw-r--r-- 1 root root 10240 Jul 13 03:07 myfolder.tar 
[root@client24 ~]# rm myfolder.tar 
rm: remove regular file `myfolder.tar'? y 
To create a tar file with zip 
[root@client24 ~]# tar -cvzf myfolder.tz /myfolder 
tar: Removing leading `/' from member names /myfolder/ 
/myfolder/dir1/ 
/myfolder/tom_file /myfolder/test_file /myfolder/1 
[root@client24 ~]# ls -ld myfolder.tz 
-rw-r--r-- 1 root root 251 Jul 13 03:09 myfolder.tz 
To view the contents of the tar file without extracting. 
[root@client24 ~]# tar -tvzf myfolder.tz

drwxrwxrwx root/root 
drwxr-xr-x root/root
-rw-r--r-- tom/joy
-rw-rw-rw- root/root
-rw-r--r-- tom/joy

0 2008-07-13 01:31:34 myfolder/
0 2008-07-13 01:28:39 myfolder/dir1/
12 2008-07-13 01:29:51 myfolder/tom_file
0 2008-07-13 00:06:35 myfolder/test_file
0 2008-07-13 01:31:34 myfolder/1 
[root@client24 ~]# rm -r /myfolder 
rm: descend into directory `/myfolder'? y 
rm: remove directory `/myfolder/dir1'? y 
rm: remove regular file `/myfolder/tom_file'? y 
rm: remove regular empty file `/myfolder/test_file'? y rm: remove regular empty file `/myfolder/1'? y 
rm: remove directory `/myfolder'? y 
[root@client24 ~]# cd / 

To extract the tar file. 

[root@client24 /]# tar -xvzf /root/myfolder.tz myfolder/ 
myfolder/dir1/ 
myfolder/tom_file myfolder/test_file myfolder/1 

[root@client24 /]# ls -ld myfolder 
drwxrwxrwx 3 root root 4096 Jul 13 01:31 myfolder 

[root@client24 /]# ls /myfolder/ 
1  dir1  test_file  tom_file 

[root@client24 ~]# cd /myfolder/ 

To copy files to archive. 
[root@client24 myfolder]# ls | cpio -ov > myfolder.cpio 
1 
dir1 
myfolder.cpio 
test_file 
tom_file 
1 block 

[root@client24 myfolder]# ls 
1  dir1  myfolder.cpio  test_file  tom_file 
[root@client24 myfolder]# ls 
1  dir1  myfolder.cpio  test_file  tom_file [root@client24 myfolder]# rm -r * 
rm: remove regular empty file `1'? y rm: remove directory `dir1'? y 
rm: remove regular file `myfolder.cpio'? n 
rm: remove regular empty file `test_file'? y rm: remove regular file `tom_file'? y 

To copy files from archive. 

[root@client24 myfolder]# cpio -iv < myfolder.cpio 
1 
dir1 
cpio: myfolder.cpio not created: newer or same age version exists myfolder.cpio 
test_file 
tom_file 
1 block 

[root@client24 myfolder]# ls 
1  dir1  myfolder.cpio  test_file  tom_file 
[root@client24 ~]# cat > test 
test file for scp 

Copy the test file to a remote systems /root directory 

[root@client24 ~]# scp -r test 192.168.0.23:/root/ 
root@192.168.0.23's password: 
test 
100% 18 0.0KB/s 00:00

[root@client24 ~]# rm  test
rm: remove regular file `test'? y

Copy the file on a remote systems to the /root/test directory 

[root@client24 ~]# scp -r 192.168.0.23:/root/test . 
root@192.168.0.23's password: 
test 
100% 18 0.0KB/s 00:00
[root@client24 ~]# ls -ld test 
-rw-r--r-- 1 root root 18 Jul 13 03:27 test