The Scots racked up 27 points before half-time to claim their first win of the competition and put them in buoyant mood ahead of next week’s return clash at Kingsholm, which could make or break both sides’ qualification hopes.
Lineen said: “It’s absolutely fantastic the way we have been gelling in the last couple of weeks. I’m just so happy with the front five. They worked so darned hard. These guys are still young, but the belief is coming.”
Gloucester fly-half Nicky Robinson matched his opposite number Dan Parks from the placed ball early on, both landing three penalties to leave the sides tied at 9-9.
The visors’ Charlie Sharples pounced for the first try of the game against the run of play, but Parks landed two more kicks and eight minutes from half-time, a sparkling crossfield move saw Max Evans cross for a home try.
The break did not come quickly enough for a beleaguered Gloucester, who conceded try number two when Parks’ long pass found full-back Bernie Stortoni to romp in for the score.
The conversion took Parks’ first-half tally to 17 points and he made it 20 just three minutes into the second half with another penalty. Gloucester tried to hit back but the home side soaked up all the pressure, and Parks banged over his seventh penalty late on.
Gloucester coach Bryan Redpath lamented his side’s “passive defence” and added: “I think Glasgow are playing well this year and deserved their victory. We were well and truly beaten by a team that did the basics better than us.”
GLASGOW: B Stortoni; P Murchie, M Evans, G Morrison, T Evans; D Parks, C Cusiter; J Welsh, D Hall, M Low; D Turner, R Gray; K Brown, J Barclay (capt), R Vernon.
Replacements: C Gregor for Stortoni (63), DTH van der Merwe for Murchie (41), M McMillan for Cusiter (70), K Tkachuk for Welsh (60), F Thomson for Hall (70), E Kalman for Low (78), T Barker for Gray (75), C Forrester for Vernon (70).
GLOUCESTER: C Spencer; C Sharples, J Simpson-Daniel, E Fuimaono-Sapolu, L Vainikolo; N Robinson, R Lawson; N Wood, S Lawson, G Somerville; D Attwood, A Brown; P Buxton (capt), A Strokosch, L Narraway.
Replacements: T Voyce for Spencer (56), T Molenaar for Fuimaono-Sapolu (49), A Dickinson for Wood (49), P Doran-Jones for Somerville (63), A Eustace for Brown (74), G Delve for Buxton.
Referee: Christophe Berdos (France).
Amlin Challenge Cup Pool 2: Montpellier 57 Olympus Madrid 24; Pool 3: Castres 9 Saracens 23; Toulon 73 Rovigo 3.