zh-CN:Netctl Template:Article summary start Template:Article summary text Template:Article summary end Netctl is a new Arch project that replaces netcfg. Netctl is the future (and present) of CLI-based network management on Arch Linux.
The [core]. Installing netctl will replace .package is available in
Considerable effort has gone into the construction of quality man pages. Users should read the following man pages prior to using netctl:
netcfg are conflicting packages. You will be potentially connectionless after installing
netctl, IF your profiles are misconfigured.
netctl may be used to introspect and control the state of the systemd services for the network profile manager. Example configuration files are provided for the user to assist them in configuring their network connection. These example profiles are located in
/etc/netctl/examples/. The common configurations include:
To use an example profile, simply copy one of them from
/etc/netctl/ and configure it to your needs:
# cp /etc/netctl/examples/wireless-wpa /etc/netctl/
Once you have created your profile, make an attempt to establish a connection using the newly created profile by running:
# netctl start <profile>
If issuing the above command results in a failure, then use
journalctl -xn and
netctl status <profile> in order to obtain a more in depth explanation of the failure. Make the needed corrections to the failed configuration and retest.
Just One Profile
If you are using only one profile, once that profile is started successfully, it can be
# netctl enable <profile>
This will create a
systemd service that will start when the computer boots.
netcfg there was
netctl-auto@<interface>.service for wireless profiles, and
netctl-ifplugd@<interface>.service for wired profiles. Once your profiles are set and verified to be working, simply enable these services with
# systemctl enable netctl-auto@<interface>.service # systemctl enable netctl-ifplugd@<interface>.service
If you have previously enabled a profile through
# netctl disable <profile>
to prevent the profile from starting twice at boot, and possibly causing issues with wpa_supplicant.
netctl reenable <profile>to apply the changes.
Migrating from netcfg
netcfgso disable existing
netcfg@<profile>service before installing
/etc/netctl to store its profiles, not
netcfg's profile storage location).
In order to migrate from netcfg, at least the following is needed:
- Move network profile files to the new directory.
- Rename variables therein according to netctl.profile(5) (most have only become UpperCamelCase i.e CONNECTION= becomes Connection=).
- For static IP configuration make sure the Address= variables have a netmask after the IP (e.g. Address=('192.168.1.23/24' '192.168.1.87/24') in the example profile).
- Unquote interface variables and other variables that don't strictly need quoting (this is mainly a style thing).
netctl enable <profile>for every profile in the old NETWORKS array. 'last' doesn't work this way, see netctl.special(7).
netctl start <profile>instead of netcfg-menu. wifi-menu remains available.
Password encryption (256-bit PSK)
Users not wishing to have their passwords stored in plain text have the option of generating a 256-bit Encrypted PSK.
# pacman -S wpa_actiond
Next, generate your 256-bit Encrypted PSK using wpa_passphrase:
Usage: wpa_passphrase [ssid] [passphrase]
$ wpa_passphrase archlinux freenode
In a second terminal window copy the example file
# cp /etc/netctl/examples/wireless-wpa /etc/netctl/wireless-wpa
You will then need to edit
/etc/netctl/wireless-wpa using your favorite text editor and add the Encrypted Pre-shared Key that was generated earlier using wpa_passphrase, to the
Key variable of this profile.
Once completed your network profile
wireless-wpa containing a 256-bit Encrypted PSK should resemble:
Description='A simple WPA encrypted wireless connection using 256-bit Encrypted PSK' Interface=wlp2s2 Connection=wireless Security=wpa IP=dhcp ESSID=archlinux Key=\"64cf3ced850ecef39197bb7b7b301fc39437a6aa6c6a599d0534b16af578e04a
Key=that are explained at the end of netctl.profile(5).
Official announcement thread: https://bbs.archlinux.org/viewtopic.php?id=157670
Tips and Tricks
As of April 2013 there is no netctl alternative to
netcfg current. If you relied on it for something, like a status bar for a tiling window manager, you can now use:
# netctl list | sed -n 's/^\* //p'
netctl-auto was used to connect:
# wpa_cli -i <interface> status | sed -n 's/^id_str=//p'