Steps to back up Ubuntu system

I believe that many people have no habit of backing up their computers. In fact, this is not good. The role of backup is reflected in the problem of the computer. It can restore the system to the state at the time of backup. The following small series will introduce you to the Ubuntu system backup method.

Recommended: Ubuntu gnome 32-bit standard edition download

1. In the desktop environment, open your mobile hard disk

View disk drive letter where: df -ah

df(DiskFree) a stands for all, h stands for human (human) understandable characters, see the command df --help

ly@ly:/dev$ df -ah

File system capacity is already available. % used mount point

/dev/sda9 93G 8.9G 79G 11% /

proc 0 0 0 - /proc

sysfs 0 0 0 - /sys

none 4.0K 0 4.0K 0% /sys/fs/cgroup

none 0 0 0 - /sys/fs/fuse/connections

none 0 0 0 - /sys/kernel/debug

none 0 0 0 - /sys/kernel/security

udev 1.9G 4.0K 1.9G 1% /dev< Br>

devpts 0 0 0 - /dev/pts

tmpfs 386M 888K 386M 1% /run

none 5.0M 0 5.0M 0% /run/lock

none 1.9G 156K 1.9G 1% /run/shm

none 100M 36K 100M 1% /run/user

gvfsd-fuse 0 0 0 - /run/user/ly/Gvfs

/dev/sdb5 222G 126G 97G 57% /media/ly/LY2

/dev/sdb1 245G 175G 70G 72% /media/ly/LY1

I want to put the backup file on the mobile hard disk LY1. So remember the device sdb1
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