To see processes that consume lot of I/O use top command:
top -mio
Today Quick Tip: Add a user to a group
If you have the user john and you want to add that user to group managers, in FreeBSD use pw command:
pw groupmod managers -M managers,john
This is how to add a user to a group in FreeBSD.
Today Quick Tip: Redirect stdout and stderr to the same file
For example if you want to write a script and all your error and other messages to be redirected to a file you can use in every command at the end of the command the following: >/tmp/install.log 2>&1
For example if in a script you clone a hard drive you can use this:
Journal 
