The system may provide non-standard extensions. These are features not required by POSIX.1-2008 and may include, but are not limited to: […] Additional character special files with special properties (for example, /dev/stdin, /dev/stdout, and /dev/stderr)
I’d like to take a program P that reads from stdin & writes to stdout, but connect it to nc or whatever such that it reads from a certain port and outputs to another port.
How does one go about using diff to compare the output of two commands?
I have a bash application that is producing some result, and I’d like to echo the result to either stdout or to a user chosen file. Because I also echo other interactive messages going to the screen, requiring the user to explicitly use the > redirection when he wants to echo the result to a file is not an option (*), as those messages would also appear in the file.
I’m using bash script on AMazon Linux. When I want to redirect stderr and stdout to a file, I can run
While building a small expect script I noticed that, after executing the script, some characters were automatically on the input of bash. I have seen that on other programs before, but here I have something reproducable.
Is there a way to pipe the output of a command and direct it to the stdout as well?
I’ve stumbled on this issue, so I’m wondering how is this possible?
I’d like to send stdout from one process to the stdin of another process, but also to the console. Sending stdout to stdout+stderr, for instance.