The clear command in Ubuntu cannot be found.

Problem description: After Entering clear in terminal, the prompt is Theprogram 'clear' iscurrentlynotinstalled. Youcaninstallitbytyping: sudoapt-getinstallncurses-bin. After Entering sudoapt-getinstallncurses-bin as prompted, the system prompts:

Problem description:

After Entering clear in terminal, the prompt is:

The program 'clear' is currently not installed. You can install it

By typing:

Sudo apt-get install ncurses-bin

After entering sudo apt-get install ncurses-bin as prompted, the system prompts:

Ncurses-bin is already the newest version.

0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.

I found/usr/bin, which does not have clear, while libncurses5, libncurses5-dev,

Libncursesw5 is installed.

Solution:

Sudo apt-get -- reinstall install ncurses-bin

Postscript:

In fact, at that time, I thought of using reinstall. Unfortunately, I had no patience in man apt-get. After reading it again, I did not find the -- reinstall option. When solving a problem, this kind of irritability is not necessary, otherwise even if you can think of a solution, it will pass.