1. The difference between sudo sh and sudo bash sh
Run "sh" as a super user. The sh utility is a command language interpreter.
Run "bash" as a super user. Bash is a shell or command language interpreter. Bash is a sh-compatible shell.
2. The dir instruction
Enter the folder under the current path of dir
3. Delete folder instruction
sudo rm -r folder name
sudo rm -rf /usr/local/***
4. cp instruction/copy instruction
The cp command is used to copy files or folders. It has two main forms
Usage 1: Copy a file
$ cp [option] src-file target-file
Usage 2: Copy multiple files, the target is a folder
$ cp [option] src-file1 src-file2… target-directory
5. Check the nvidia driver version
nvidia-smi
my version is 455.45.01
6. Check the system kernel
View the kernel list sudo dpkg --get-selections |grep linux-image
View the currently used kernel uname -r
mine is 4.15.0-129-generic
7, check the gcc version
gcc -v
mine is 5.4.0