Linux {} use
In the linux command, {} is equivalent to a selection list and can solve the problem of repeated typing.
Applications in common commands:
Create multiple directories for multiple months in the same year under the current directory, 201801 and 201802
Mkdir 2018 {01,02}
Of course, you can also create multi-tier directories at the same time, and create 2018 Universe 01 and 2018 Universe 02.
Mkdir-p 2018Compact 0 {1pr 2}
Copy the 20171201, 20171203 and 20171212 directories in the current directory to the 201801 directory
Cp-fr 201712 {01rec 03jol 12} 201801 /
