change proxy settings via dconf in linux

showproxy.sh

#!/bin/bash
#########################################
# handle proxy settings
# create link to this file using the case option below to create command to set a proxy

dconf_hosts="/system/proxy/http/host
            /system/proxy/https/host
            /system/proxy/socks/host"

dconf_ports="/system/proxy/http/port
            /system/proxy/https/port
            /system/proxy/socks/port"

dconf_keys="${dconf_hosts} ${dconf_ports} /system/proxy/ignore-hosts"

showproxy () {
    for key in $dconf_keys
    do
        echo -en "$key=\t"
        dconf read $key
    done
}

setproxy () {
    host=$1
    port=$2

    for key in $dconf_hosts
    do
        dconf write $key $host
    done
    for key in $dconf_ports
    do
        dconf write $key $port
    done
    
    for key in $dconf_keys
    do
        echo -en "$key=\t"
        dconf read $key
    done
}


case $(basename $0) in 
    showproxy.sh)
                showproxy
                ;;
    setoneproxy.sh)
                setproxy "'1.2.3.4'" 1234
                ;;
    settwoproxy.sh)
                setproxy "'5.6.7.8'" 5678
                ;;
    setthreeproxy.sh)
                setproxy "'9.8.7.6'" 9876
                ;;
esac