Cambridge dictionary and collins, for instance, list both variants For stcloud is it including a full stop eg st.cloud The dropping of full stops seems more prevalent in the uk than in the us
1985 Elizabeth Daily
It certainly avoids a lot of clutter (eg i.e.,)
Rarely does it cause a lack of clarity.
Is short for exempli gratia, and is in common use to introduce an example within a sentence Submit a sample of academic writing, e.g., a dissertation chapter However, some authors use ex. It is similarly unnecessary to follow an eg list with etc, as eg already implies an incomplete list, and either eg or etc should be used
This blog entry points out a nice distinction between the two Another thing to pay attention to is whether the list is definite or possible members of a set. What are the differences between viz. and e.g. and in which situations each is used Please also compare the usage with i.e. if appropriate
In response to a comment below
Should be used when you want to say 'in other words.' e.g Is it appropriate to use e.g. in a sentence without using parentheses This administrative access control should provide visibility into access via multiple vectors (e.g Terms like eg, ie and etc, while common, make reading difficult for some
‘eg’ can sometimes be read aloud as ‘egg’ by screen reading software Eg mcnally,should it be mc.nally