grep -c 'searchterm' myfile
4 Count Case GE ProLine 2 Bulb 120V T12 Electronic Fluorescent Light Ballasts
$49.99
Advance Instant Start Electronic Ballast REL-2P60-S-A~ F96T12 Slimline STK 4866
$40.00
Philips ADVANCE AmbiStar RELB-2S40-N Replacement Ballast 40-Watt 2-Lamp T12
$18.79
QHE 4X32T8/UNV ISH-SC Sylvania 51347 4-Lamp T8 Instant Start Fluorescent Ballast
$17.99
Lot Of 10 New Advance Electronic 3 Lamp ballast F32-t8 120/277v FACTORY SEALED
$69.00
Philips Advance IntelliVolt 120v To 277v Ballast Centrum ICN-4P32-N
$12.95
Philips ADVANCE AmbiStar RELB-2S40-N Replacement Ballast 40-Watt 2-Lamp T12
$18.79
PHILIPS ADVANCE Core-Coil Ballast Kit 71A5389- 1-100W M90 Metal Halide.FreeShip
$22.99
10-Count GE Fluorescent Ballast, GE432-MVPS-L Electronic T8, 120v to 277v
$108.99
Metal Halide Ballast Kit 400W Multi 5 Tap 120V 208V 240V 277V 480V M59
$49.95