What does r mean in CMD?
R is an interpreted programming language. This means that R will interpret each line of code as it is entered and, if it is valid, R will execute it, returning the result in the command console.
What is the use of read in Unix?
read is a command found on Unix and Unix-like operating systems such as Linux. It reads a line of input from standard input or a file passed as an argument to its -u flag, and assigns it to a variable. In Unix shells, like Bash, it is present as a shell built in function, and not as a separate executable file.
What is the meaning of r in Linux?
14. The character ‘\r’ is carriage return. It returns the cursor to the start of the line. It is often used in Internet protocols conjunction with newline ( ‘\n’ ) to mark the end of a line (most standards specifies it as “\r\n” , but some allows the wrong way around).
Does Linux use r n?
4 Answers. \n is used for Unix systems (including Linux, and OSX). \r\n is mainly used on Windows. \r is used on really old Macs.
Is r Unix?
But seriously, there are many: in Unix and all Unix-like systems, \n is the code for end-of-line, \r means nothing special. in old Mac systems (pre-OS X), \r was the code for end-of-line instead. in Windows (and many old OSs), the code for end of line is 2 characters, \r\n , in this order.
What is the meaning of read-R in Bash?
The -r option prevents backslash escapes from being interpreted. Here’s an example: The Bash man page’s section about read states that, by default… The backslash character ( \\) may be used to remove any special meaning for the next character read and for line continuation.
What is the meaning of the word read?
1a(1) : to receive or take in the sense of (letters, symbols, etc.) especially by sight or touch. (2) : to study the movements of with mental formulation of the communication expressed read lips. (3) : to utter aloud the printed or written words of read them a story.
What’s the difference between R-Squared and mean?
R-squared is the percentage of the dependent variable variation that a linear model explains. R-squared is always between 0 and 100%: 0% represents a model that does not explain any of the variation in the responsevariable around its mean. The mean of the dependent variable predicts the dependent variable as well as the regression model.
What does read mean on a hard drive?
Every Read Is Also a Write Every transfer of data is a “read” from one location and a “write” to another. Reading a sector in a hard drive means writing that data into memory. When data are copied from one memory area to another, the data are “read out of” one section of RAM and “written into” another part.