On 06/04/2020 18:22, Istvan Gabor wrote:
I guessed it should be some input/output redirection but all google results gave only command line examples where the input (standard input) was either a file or the terminal input.
Yes, becuase this is Linix and that's what redirection is. A 'filter' takes data to STDIN and provides output on its STDOUT. So I can run program and it takes terminal data from my keyboard and sends out to my terminal screen. I can run program <file1 >file2 and it takes input from file1 and sends output to file2 I can run generator | program | grep significant Along the way there may be arguments supplied to the program. So yes, all this emerges from the 'pipes and filters' model. The man page for the shell shows this and more, different ways of doing co-processing IO based on the STDIN/STDOUT. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org