Linux - how to redirect input and output to a file?

Question

linux

Hello.
There is a java program, I need to run it and log its output to a file, and transfer the input from the console to the program, and log it in the same way.
As for the output, everything is clear 'java pia.jar >> pia.log', but I can't figure out how to direct input from the console both to the file and to the program itself.
Tell me please

Answer 1

cat file | prg > log.txt
prg < file > log.txt
prg < file | tee log.txt
pick up...
Shl. And what, they hid a certificate from you? scoundrels....

Answer 2

Not sure what it is, but look here .