Linux Command Line - I/O Redirection
stdinis standard input.
stdoutis standard output.
stderris standard error.
Transmitted through the keyboard, from the user to a program. It is terminated when the end of file (EOF) is reached.
Display data generated by a program on the terminal if it is not redirected.
Display errors generated by a program on the terminal if it is not redirected.
&>standard output and standard error.
i>&jredirect anything that targets
2>&1standard error to standard output
Redirect streams from one program to another.
Alter piped redirection and output: find, grep, tee, tr, wc.
/dev/null special file that trashes any data that it receives. You can redirect output that you do not want displayed or passed to another program.