Echo merely repeats its command line arguments as stated. The 'printf' command allows for formatted print and a more exacting method of printing out information. Printf requires you to specify the format of what you want to print; echo does not have this ability.
They are different languages, so you need to use a different word with different syntax to do the same thing. For example, to display the contents of the current directory, the command in MS-DOS is dir, but in UNIX it's ls.
Command set and command switches. Both are based on the UNIX operating system, so they have the core of the operating system in common.
su substitute user.. and su is a unix command used to run the shell of another user without logging off..
No difference, really. Unix is an OS (Operating System)
what are similarities and differences between linux and unix?
UNIX is a command-based OS. In contrast, Windows is a menu-based OS.
There is no traditional 'execute' command in Unix.
There is no standard 'format' command in Unix.
Unix is an operating system, Java is a language.
The 'CD' command is not standard for Unix. The 'cd' command, however, will change directories (folders). It is a means of navigating the Unix file system.
Utilities are programs that can run or execute. Commands are slightly different than utilities. Command refers to the name of the program and any arguments you specify to that program to change its behavior.
In Unix, use the 'man' command.