Do you know the DOS and Linux commands you use?

Function	Linux	Ms-dos
Go to this directory	Cd	Cd
Enumerating files	Ls	Dir
Create a Directory	Mkdir	Mkdir
Clear Screen	Clear	Cls
Copying files	Cp	Copy
Moving files	Mv	Move
deleting files	Rm	Del
View Files	Less	More
File Rename	Mv	ren
Compare file Contents	Diff	Fc
View current Path	Pwd	ChDir
echo the output to the screen	Echo	Echo
Find a string in a file	Grep	Find
Show Command Help	Mans	Command/?
Close and exit	Exit	Exit
Show or set date	Date	Date
Show time	Date	Time
Show memory that has been used	Free	Mem
Format floppy disk	MKE2FS or Mformat	Format

Do you know the DOS and Linux commands you use?