ubuntu common mistakes!(updating)

1.E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?
chuchienshu@ubuntu:~$ sudo apt-get install g++
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

Someone experienced said that this error appear while others’ apt process alive.So I did as blew.

chuchienshu@ubuntu:~$ ps -A | grep apt
  2934 ?        00:00:00 apt.systemd.dai
  2938 ?        00:00:00 apt.systemd.dai
chuchienshu@ubuntu:~$ sudo kill -9 2934
chuchienshu@ubuntu:~$ ps -A | grep apt
  2938 ?        00:00:00 apt.systemd.dai
chuchienshu@ubuntu:~$ sudo kill -9 2938
chuchienshu@ubuntu:~$ ps -A | grep apt
chuchienshu@ubuntu:~$ sudo apt-get install g++
E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)
E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

However, this error still here!

Further going.I got the finish solution.

chuchienshu@ubuntu:~$ sudo rm /var/cache/apt/archives/lock 
chuchienshu@ubuntu:~$ sudo rm /var/lib/dpkg/lock 
chuchienshu@ubuntu:~$ sudo dpkg --configure -a
chuchienshu@ubuntu:~$ sudo apt-get update
Hit:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
Hit:2 http://us.archive.ubuntu.com/ubuntu bionic InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu bionic-updates InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu bionic-backports InRelease
Reading package lists... Done
chuchienshu@ubuntu:~$ sudo apt-get install g++
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:

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