I've always done 'sort | uniq'. Never bothered to check for the the unique flag to sort. Although 'uniq -c' is quite nice to have.
-c, --count prefix lines by the number of occurrences
Yeah, to see the packages with multiple versions:
grep 'name = ' ms-litebox-Cargo.lock | sort | uniq -c | grep -v '1 name' | sort -n
Edit: Also, beware of the unsorted uniq count:
cat <<EOF | uniq -c > a > a > b > a > a > EOF 2 a 1 b 2 a
Yeah, to see the packages with multiple versions:
Package windows-sys has the highest number of versions included, 3: 0.59.0, 0.60.2, and 0.61.2.Edit: Also, beware of the unsorted uniq count: