Learn Linux Shell Scripting - Fundamentals of Bash 4.4

Advanced redirecting

We've now seen both input and output redirection, and some practical uses for both. We have not, however, combined both forms of redirection yet, and this is very much possible!

You will probably not use this too often, though; most commands accept the input as an argument, and often supply a flag that allows you to specify a file to output to. But knowledge is power, and if you ever come across a command that does not have these arguments, you know you can solve this yourself.

Try the following on your command line, and try to understand why you get the results that you see:

reader@ubuntu:~/scripts/chapter_12$ cat stderr.c #include <stdio.h>int main(){  // Print messages to stdout and stderr. fprintf(stdout, "This is ...