Some of the problems under Linux

said in front of the words:

This blog is mainly for bloggers in the process of learning Linux, some problems encountered in the process of recording and solving these problems. So this article will be kept up to date.

1. When you open Ubuntu under VMware, the following dialog box appears:

All data created during the this guest session would be deleted if you log out, and settings would be the reset to defaults. Please save the files on the some external device, for instance a USB stick, and if you would as to access them again.

The general meaning is that some operation records of this login will be deleted and reverted to the initial state at the next logon.

Workaround:

The problem above is that we are logged in as a visitor, as long as we switch the identity of the registered person. There will be an option for the user role at the beginning of the boot. We choose it as Ubuntu on the line.

2. Please note when you intend to use Su under Ubuntu. You will have the following situation:

The above is saying that the certification failed. Yes, maybe you'll say my password is right. But why is it wrong? There could be two reasons.

1. Log in as a visitor. Then just switch on the identity of the login.

2. Under Ubuntu, we are not allowed to use root directly. You need to add sudo to the front of the command to prevent some mis-operation, after all, Root has too much permissions.

To run after adding sudo:

Some of the problems under Linux