A simple (not perfect) approach could be to have a comment containing a "unique" string on the last line and grep for it as the first check to ensure that the e

A simple (not perfect) approach could be to have a comment containing a "unique" string on the last line and grep for it as the first check to ensure that the entire script has downloaded. #!/usr/bin/env bash set -u grep -wq '^# asfewdq42d3@asd$' $0 [ $? -ne 0 ] \ && echo "script is not complete - re-download" \ && exit 1 echo "script is complete" # asfewdq42d3@asd