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You should use netctl. It is the Arch Linux built in network management system. If it isn't already installed (it should be though), run pacman -SySyu netctl then look in /etc/netctl. There are example configuration files in /etc/netctl/examples. To use an example, just copy it to /etc/netctl and edit it to fit your set up. So for your case, run cp /etc/netctl/example/wireless-wpa /etc/netctl/somedescriptivename then edit /etc/netctl/somedescriptivename to fit your set up.
To enable auto configuration of your wireless networks with systemd, make sure the wpa_actiond package is installed and enable the service: systemctl enable netctl-auto@wlan0.service

For more information please refer to the Netctl wiki entry.

You should use netctl. It is the Arch Linux built in network management system. If it isn't already installed (it should be though), run pacman -Sy netctl then look in /etc/netctl. There are example configuration files in /etc/netctl/examples. To use an example, just copy it to /etc/netctl and edit it to fit your set up. So for your case, run cp /etc/netctl/example/wireless-wpa /etc/netctl/somedescriptivename then edit /etc/netctl/somedescriptivename to fit your set up.
To enable auto configuration of your wireless networks with systemd, make sure the wpa_actiond package is installed and enable the service: systemctl enable netctl-auto@wlan0.service

For more information please refer to the Netctl wiki entry.

You should use netctl. It is the Arch Linux built in network management system. If it isn't already installed (it should be though), run pacman -Syu netctl then look in /etc/netctl. There are example configuration files in /etc/netctl/examples. To use an example, just copy it to /etc/netctl and edit it to fit your set up. So for your case, run cp /etc/netctl/example/wireless-wpa /etc/netctl/somedescriptivename then edit /etc/netctl/somedescriptivename to fit your set up.
To enable auto configuration of your wireless networks with systemd, make sure the wpa_actiond package is installed and enable the service: systemctl enable netctl-auto@wlan0.service

For more information please refer to the Netctl wiki entry.

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source | link

You should use netctl. It is the Arch Linux built in network management system. If it isn't already installed (it should be though), run pacman -Sy netctl then look in /etc/netctl. There are example configuration files in /etc/netctl/examples. To use an example, just copy it to /etc/netctl and edit it to fit your set up. So for your case, run cp /etc/netctl/example/wireless-wpa /etc/netctl/somedescriptivename then edit /etc/netctl/somedescriptivename to fit your set up.
To enable auto configuration of your wireless networks with systemd, make sure the wpa_actiond package is installed and enable the service: systemctl enable netctl-auto@wlan0.service

For more information please refer to the Netctl wiki entry.