OUTPUT REDIRECTION (STDOUT/STDERR)
Redirect STDOUT to file:
$ find / -name foo > output.txt
Redirect error messages to nowhere:
$ find / -name foo 2> /dev/null
Redirect both the error messages and the standard output to same file:
$ find / -name foo > output.txt 2>&1
OR
$ find / -name foo > output.txt 2> output.txt
Pipeing STDOUT and STRERR to another command:
find -name test.sh 2>&1 | tee /tmp/output2.txt