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In the hands of a novice like me, Linux is very easy to play, such as deleting files by mistake, installing incorrect software or drivers and causing the system to crash. At this time, as long as the data is not lost, everything will be fine, just reinstall the system.

but! Those commonly used aliases are lost, and the modified domestic sources are lost (because sometimes the source access speed that comes with the system is not impressive), and the installed software and so on.

After studying the practice of the great gods on the Internet, it is to save the required files in a different place, and download and restore the required files from there after the system is blown up.

My current environment recovery requirements are: {% label success@restore source settings%}, {% label success@restore alias%}, {% label success@restore ssh%}. (If there is an increase in the future, we will update it)

# Backup

First save the file offsite and package it with tar. Copy the two files .bashrc sources.list to the same folder, and use the following command to package

tar -cvf [packed file name] [folder to be packaged]

If the output is similar to the above, it means that the packaging is complete.

# recover

Restoring is easy, just put the file in a place you feel is safe and can be curled to. (This step has no practical significance, because everyone's save location and alias settings are different, for reference only)

WSL's Ubuntu seems to have a problem with the ssh key that comes with it, so there is an extra step to reinstall ssh.

Then restore with the following command:

#Download backup file restore source, restore alias, restore ssh
curl -O https://down.tstrs.me/restore/WSL/Ubuntu/Ubuntu18.04.tar && tar xvf Ubuntu18.04.tar && sudo cp -frap ~/Ubuntu18.04/sources.list /etc/apt / && sudo cp -frap ~/Ubuntu18.04/.bashrc ~/ && sudo cp -frap ~/Ubuntu18.04/sshd_config /etc/ssh/sshd_config && source ~/.bashrc
#update system
up -y && ug -y && ud -y && am -y
# reinstall ssh
sudo apt-get remove openssh-server -y
sudo apt-get install openssh-server -y
restart ssh
sudo service ssh --full-restart

The first command is to download the file I backed up, and overwrite the specified file, and then make the alias take effect. If it runs normally, the output is as follows:

The second command is to update the system. The meanings of up, ug, ud, and am are as follows:

alias up='sudo apt-get update'
alias ug='sudo apt-get upgrade'
alias ud='sudo apt-get dist-upgrade'
alias am='sudo apt-get autoremove'

After all the above commands are executed, the basic settings are fine. If there are new requirements in the future, it will be updated here.

EOF