Of course!
$ free -m total used free shared buffers cached Mem: 494 489 4 0 0 84 -/+ buffers/cache: 404 89 Swap: 1574 276 1297
$ killall gedit
$ free -m total used free shared buffers cached Mem: 494 356 137 0 0 43 -/+ buffers/cache: 312 181 Swap: 1574 290 1283
Of course!
$ free -m
total used free shared buffers cached
Mem: 494 489 4 0 0 84
-/+ buffers/cache: 404 89
Swap: 1574 276 1297
$ killall gedit
$ free -m
total used free shared buffers cached
Mem: 494 356 137 0 0 43
-/+ buffers/cache: 312 181
Swap: 1574 290 1283