raspberry pi adhoc

link to article

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sudo nano /etc/network/interfaces

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find line:
iface default inet dhcp
put a # character in front of the line to temporarily disable requesting an IP address from a DHCP server.
Then add below:

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iface default inet static address 192.168.10.1 netmask 255.255.255.0

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pi@raspberrypi ~ $ sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

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in wpa_supplicant # out all lines of previous wifi

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ap_scan=2 network={ ssid="MyHoc" mode=1 frequency=2432 proto=WPA key_mgmt=WPA-NONE pairwise=NONE group=CCMP psk="CaptainHoc!" }

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to connect on mac

Next click on the Advanced… button and go to the TCP/IP tab.

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Select Manually from the Configure IPv4 drop-down menu.

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Now fill in 192.168.10.2 for the IP Address and 255.255.255.0 for the Subnet Mask, then click the OK button.