Network

iw

iw is a configuration tool for mac80211 in Linux kernel with netlink Part of the code tree of iw.c in iw is

• main
  • version
  • nl80211_init
    • nl_socket_alloc
    • nl_socket_free
    • nl_socket_set_buffer_size
  • usage
    • __usage_cmd
    • usage_options
  • __handle_cmd
    • error_handler
    • finish_handler
    • ack_handler
    • register_handler
    • valid_handler
    • phy_lookup
  • phy_lookup
  • nl80211_cleanup
• TOPLEVEL
  • print_help
• handle_cmd
  • __handle_cmd
• usage_cmd
  • __usage_cmd

Proxy

Auto detect proxy with nc and connect to it

if nc -z $<srv_ip> $<proxy_port>; then
    git config --global http.proxy "http://$<srv_ip>:$<proxy_port>"
    git config --global https.proxy "https://$<srv_ip>:$<proxy_port>"

elif nc -z $<local_ip> $<proxy_port>; then
    git config --global http.proxy "http://$<local_ip>:$<proxy_port>"
    git config --global https.proxy "https://$<local_ip>:$<proxy_port>"

else
    git config --global --unset http.proxy 
    git config --global --unset https.proxy
fi

snapdrop.net

snapdrop is an easily-used point-to-point file transfer in the web browser. Open the link of snapdrop in the same network. The website can identify all devices in the same network. Just drop the file to the target.

Clash

clash is a tunnel in Go.

Installation

The package can be downloaded from Github release. It also can be downloaded in command line. As an example

wget https://github.com/Dreamacro/clash/releases/download/v1.18.0/clash-linux-amd64-v1.18.0.gz

Basic Usage

If clash is run in the user space, copy the config.yaml file to ~/.config/clash/ directory and run

clash

Clash will download the Country.mmdb file itselef and load the configuration in ~/.config/clash/.

Autostart

[WARING] OpenSUSE may not support clash for now since the Github page of clash is closed.

Systemd supports auto-start clash after opening the system. In openSUSE, the download version of clash has a systemd service with /lib/system/system/clash.service to support the auto-start process. This service is based on systemd, so it works for openSUSE and other distributions that uses systemd as the init process. Different from manually run clash, the systemd will load the configuration in the directory /etc/clash/ by default. So move the configuration file and mmdb file in the above directory by

sudo mv /path/to/config/file /etc/clash/ sudo mv /path/to/Country.mmdb /etc/clash

Then, enable and start clash service

systemclt enable clash systemclt start clash

The final process is to config the system-level network setting or program-level network setting to use the clash service.

Clash for LAN

Clash can support connection from devices in the local area network (LAN). To enable it, just edit the config.yaml file and set the allow-lan to true.