could not find /proc/self/maps

I'm using FreeBSD 7.3 (64 bit). When I try the command "cat /proc/self/maps", I get an error as, "cat: /proc/self/maps: No such file or directory". What should I do to resolve this 开发者_运维百科?

AFAIK, procfs isn't mounted by default in FreeBSD, so you should do it by yourself. Type as root:

mount -t procfs proc /proc

Or even better: add to /etc/fstab:

proc /proc procfs rw 0 0