SAP Note 21919 - ORACLE installation terminates at "spawn 'echo'"

Symptom:

Error unix.stp(1430) occurs during installation of the ORACLE DB
OS_ERROR ... An operating system error corrupted while trying to
spawn 'echo /oracle/c11'|grep '^/'' while redirecting output to ''

Cause and prerequisites

Insufficient authorization to access file /dev/null.

Solution
chmod 666 /dev/null