How to delete a network profile from etc/wpa_supplicant/wpa_supplicant.conf through command line / shell script

Question

I have multiple wifi network ssid\'s saved in my etc/wpa_supplicant/wpa_supplicant.conf like shown below, can we delete a specific network from this wpa_supplicant.conf

Answer 1

SSID=$1 
temp_var=$(sudo awk -v RS= '!/${SSID}/{printf $0""RT}' etc/wpa_supplicant/wpa_supplicant.conf)
echo -e "$temp_var" | sudo tee etc/wpa_supplicant/wpa_supplicant.conf

The temp var is needed because this is the easiest way I found to actually make awk write to he file its processing. To see the effect of changing wpa_supplicant.conf, do

svc wifi disable && svc wifi enable

Some references:

• https://stackoverflow.com/a/18955226/1246369
• https://unix.stackexchange.com/a/89707/172003
• http://ubuntuforums.org/showthread.php?t=981258#3