Freebsd wifi setup on raspberry pi

Get TP-Link USB wifi module to load.
 Edit /boot/loader.conf
 Add

if_rtwn_load="YES"
legal.realtek.license_ack=1
if_rtwn_usb_load="YES"
wlan_wep_load="YES"
wlan_ccmp_load="YES"
wlan_tkip_load="YES"

Then reboot.

Run ifconfig -a to check if wlan0 is up.

Manual test
ifconfig wlan create wlandev rtwn0 inet 192.168.0.20 netmask 0xffffff00

 wlan0 is now up.

Apache config file syntax check.

To check the syntax of a apache config file.


httpd -S -f [config file.conf]

Copy files between 2 remote servers using cpio.

ssh rhost1 "find dir | cpio -ocB" | ssh rhost2 "cd rdir2;cpio -ivB "

Watch command

Use the watch command to highlight changes in vmstat & iostat

watch -d --interval=1 iostat -xc

watch --color -d --interval=1 vmstat

cpio examples

To create an archive
find . | cpio -ocvB > x.cpio

Read an archive:
cpio -itcvB -I x.cpio

Read a file from archive:
cpio -itcvB -I x.cpio ".ssh/known_hosts"

Restore the file (remove the t option).
cpio -icvB -I x.cpio ".ssh/known_hosts"

List hardware

dmidecode

wget tips

Using wget to download file with a site that requires authentication.

wget ftp://user:password@ftp.site.com/dir/file.name