What is the Default content in /private/etc/paths?
The default content of /etc/paths until Mavericks (10.9) is:

/usr/bin
/bin
/usr/sbin
/sbin
/usr/local/bin


The default content of /etc/paths since Yosemite (10.10) is:

/usr/local/bin
/usr/bin
/bin
/usr/sbin
/sbin