here is an example of what i use
#copy underclock cgminer config, restart cgminer @ 6:55am mon-sat
55 6 * * 1-6 cp /etc/cgminer-uc /etc/cgminer.conf && /etc/init.d/cgminer restart
but you need to download win scp and use it to login , download the cgminer file
copy it / rename it so you have the original ,
change the settings in it and save it, MAKE SURE WHEN YOU SAVE IT DONT SAVE IT AS .TXT
you can rename it in win scp program
here is a sample cgminer file
{
"bitmain-use-vil":true,
"overclock":"0.80",
"api-port":"4028",
"pools":[{"user":"xxxxxxx","url":"stratum+tcp://btc.s.novablock.com:443","pass":"","_id":"1"},
{"_id":"2","url":"stratum+tcp://btc.s.novablock.com:1883","pass":"","user":"xxxxxxx"},
{"user":"xxxxxx","url":"us.ss.btc.com:1800","pass":"","_id":"3"}],
"bitmain-freq":",,,,,",
"no-pre-heat":true,
"fan-temp":"75",
"api-allow":"W:0\/0",
"bitmain-voltage":",,,,,",
"config-format-revision":"1",
"api-listen":true,
"multi-version":"4",
"fan-ctrl":"temp"
}