How to remove unused packages/applications?

by
sftzorin
from LinuxQuestions.org on (#4TC64)
Hello,
i want to remove all unused packages in a save way, how can I do that?latest?d=yIl2AUoC8zA latest?i=KeCIbm_78ic:gnsKMxzpWX4:F7zBnMy latest?i=KeCIbm_78ic:gnsKMxzpWX4:V_sGLiP latest?d=qj6IDK7rITs latest?i=KeCIbm_78ic:gnsKMxzpWX4:gIN9vFwKeCIbm_78ic
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