Setup random proxy for gnome desktop (https://free-proxy-list.net/)

random-proxy-gnome.sh

#!/bin/bash
# for removing proxy use: gsettings set org.gnome.system.proxy mode 'none'

TEMP_PROXY_DATA=$(wget https://free-proxy-list.net/ -q -O - |  tr -d '[:space:]')

TABLE=$(echo "$TEMP_PROXY_DATA" | grep -o -P '(?<=\<tr\>).*?(?=\<\/tr\>)')

strADRRESES=$(echo "$TABLE" | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}')
arrADDRESES=(${strADRRESES// / })

strPORTS=$(echo "$TABLE" |grep -o -P '(?<=\<td\>)(\d+)(?=\<\/td\>)')
arrPORTS=(${strPORTS// / })

strHTTPS=$(echo "$TABLE" |grep -o -P "(?<=\<tdclass\='hx'\>)\w{2,3}(?=\<\/td\>)")
arrHTTPS=(${strHTTPS// / })

# random number from list
rndSERVER=$(((RANDOM%${#arrPORTS[@]})-1))

: '
If you want connect only to proxy with HTTPS support, uncomment this

while [ ${arrHTTPS[$rndSERVER]} != "yes" ]
do
    rndSERVER=$(((RANDOM%${#arrPORTS[@]})-1))
done
'

gsettings set org.gnome.system.proxy mode 'manual' 
gsettings set org.gnome.system.proxy.http host ${arrADDRESES[$rndSERVER]}
gsettings set org.gnome.system.proxy.http port ${arrPORTS[$rndSERVER]}
if [ ${arrHTTPS[$rndSERVER]} = "yes" ]
then
    gsettings set org.gnome.system.proxy.https host ${arrADDRESES[$rndSERVER]}
    gsettings set org.gnome.system.proxy.https port ${arrPORTS[$rndSERVER]}
fi
gsettings set org.gnome.system.proxy ignore-hosts "['localhost', '127.0.0.0/8', '10.0.0.0/8', '192.168.0.0/16', '172.16.0.0/12']"