If you suspect your clutch hose is leaking, the first place you have to look is under the car by your transmission. Since this hydraulic line connects the master and slave cylinders, the leak will be anywhere between them. The engine doesn't even have to be running to test this, since this is a closed-loop system that does not rely on any power or vacuum from the engine. All you have to do is get in the car and depress the clutch pedal a couple of times. If you have someone to help you diagnose this, tell them to get under the car and look to see if any fluid drips down when you are pressing the pedal. If you do not have a helper, then set up your phone or a camera to take video under the car and review it after you've pressed the pedal. Either way, if the hydraulic clutch line has a leak in it then you will surely see it. Unfortunately, this means that it will be increasingly difficult to release the clutch disc when you want to shift, because there will be a slow, constant loss of fluid that would usually assist with this action. But that's probably what brought you here in the first place.
Manual transmissions were the first transmissions, but the clutch wasn't always hydraulically actuated. The more traditional clutch linkage system is with a cable rather than a hydraulic clutch hose. The cable would transfer motion from the pedal and it would pull the fork; triggering the release bearing. But with a hydraulic system, much like your disc brakes, a master cylinder draws some fluid from its reservoir and pressurizes it through compression with a piston. It pushes this pressurized fluid through the clutch line to a slave cylinder where that is then translated into a pull on the clutch fork. The release bearing is then triggered.
Replacing your clutch hose is a snap (no pun intended).