cheat.sheets/sheets/ranlib

# ranlib
# Generate an index to the contents of an archive and stores it in the archive.
# The index lists each symbol defined by a member of an archive that is
# a relocatable object file.

# Creates an index of the contents of fruits.a and store the index in fruits.a.
# This is useful for linking and in case the objects call each other.
ranlib fruits.a
# after
#   ar r fruits.a apple.o orange.o pineapple.o
# is called