Meaning of 2>&1 in crontab
It is quite common to find the following line in crontab
32 5 * * * root /project/cron.sh >> /dev/null 2>&1
The meaning of 2>&1 at the end of line means to redirect the standard error stream (stderr) to the standard out stream (stdout), and finally redirect everything to /dev/null.
It is commonly used in crontab definition so if a given command return too much warnings, it will not be logged anywhere in the system in order to reduce the storage requirements.