NFS

showmount -e <nfs_server>

sudo mount_nfs -P maestric.getmyip.com:/Users/jerome/projects/www home_apache 
sudo umount home_apache

Slashes in the shared path must be protected by two anti-slashes.

# share /Users/jerome/projects/www/test
sudo nicl . -create /exports/\\/Users\\/jerome\\/projects\\/www

# restrict to computer 206.12.30.40
sudo nicl . -append /exports/\\/Users\\/jerome\\/projects\\/www clients "206.12.30.40"

# changes will be done as jerome
sudo nicl . -append /exports/\\/Users\\/jerome\\/projects\\/www opts "mapall=jerome"

# kill mountd
sudo kill -1 `cat /var/run/mountd.pid`

# launch daemons
sudo /usr/sbin/mountd
sudo /sbin/nfsd -t -u -n 6

# check it worked
showmount -e

Source: Setup an NFS server on Mac OS X

Setup an NFS server on Ubuntu