In several places, I have simply inserted the code as a script to be downloaded. I tend to keep things like this around so I can just run a simple command instead of copying/pasting an entire line.
#! /bin/sh egrep '(ad|cd|da)[0-9]' /var/run/dmesg.boot | sort
Or, simply run
geom disk list
usbconfig
Following example will set up an empty drive (/dev/da23) with GPT as the schema and one slice (partition). The partition will have a label, sneakernet, then be formatted using ufs.
When you label a slice, it can be found in /dev/gpt/ and mounted using that alias.
# create the GPT schema gpart create -s GPT da23 # show what is there (nothing yet) gpart list /dev/da23 # add a new slice of type UFS, and give it a label, sneakernet # use all of the available disk space for this (ie, only one slice) gpart add -t freebsd-ufs -l sneakernet da23 # show what is up gpart list /dev/da23 # format the partition with UFS newfs /dev/da23p1 # it should now show up as an alias in /dev/gpt ls /dev/gpt # make a place to mount it mkdir /mnt/sneakernet # mount it mount /dev/gpt/sneakernet /mnt/sneakernet # unmount it umount /mnt/sneakernet # clean up rmdir /mnt/sneakernet
Following command will show you the temperature of each core of a processor
sysctl -a | grep temperature | grep cpu
iotop is a well known utility under Linux, but not available for FreeBSD. However, the following command will do the same thing (does not apparently work for iSCSI devices)
top -m io -o total
Under Linux, watch repeats a command over and over, so it is useful for monitoring long running processes. The FreeBSD command cmdwatch does the same thing, with the same flags.
cmdwatch zpool iostat -v
I was used to Debian's apt-get, and used the -y (answer “Yes” to all questions) parameter. Looking for something similar for pkg, I ran across http://dan.langille.org/2013/12/06/bootstrapping-installing-pkg-on-freebsd-unattended-and-without-answering-yes/ which showed a possible answer; set an environmental variable as part of the call.
env ASSUME_ALWAYS_YES=YES pkg install p5-libwww
will install LWP (p5-libwww) without waiting for you to select “Yes”
After a while, your pkg cache will use more and more space on your disk, with copies of packages you have already installed. The following command cleans that cache.
pkg clean
By default, a new user is not able to become root. To do this, you must add them to the wheel group. Use the following command
pw user mod username -G wheel
where username is the username of the user who has access
I just like bash for my shell. While it is not the standard for BSD, it is much more powerful than the standard sh, so I like to use it for my personal account. Once bash is installed, set it as the default shell for a user.
chsh -s bash username
Warning: do not modify the root account's shell. You will break your system. If you want a bash script to run as root, be sure to include
#! /usr/bin/env bash
at the head of your scripts.