What is standard input command in Linux?

What is standard input command line?

Standard input, often abbreviated stdin, is the source of input data for command line programs (i.e., all-text mode programs) on Linux and other Unix-like operating systems. Such operating systems feature the concept of standard streams of data.

What is standard input in shell script?

STDIN stands for standard input, which is the keyboard by default. You can replace the STDIN, which is the keyboard and replace it with a file by using the input redirect symbol (<), it sends the data as keyboard typing.

What is standard output command in Linux?

Stdout, also known as standard output, is the default file descriptor where a process can write output. In Unix-like operating systems, such as Linux, macOS X, and BSD, stdout is defined by the POSIX standard. Its default file descriptor number is 1. In the terminal, standard output defaults to the user's screen.

Which command reads from standard input?

The tee command, used with a pipe, reads standard input, then writes the output of a program to standard output and simultaneously copies it into the specified file or files.