STDInandOut.md - 14paxton/Linux Wiki
use a string put int script that needs a user response
echo $GH_TOKEN | gh auth login --with-token;
use output from a script to set a variable
tee can be used to create a file from output here i take the out put pipe that and error output which is 2 >&1 piped into stnd out
File descriptor 1 is the standard output (stdout). File descriptor 2 is the standard error (stderr).
2> redirects stderr to an (unspecified) file. &1 redirects stderr to stdout.