Adding UTF-8 BOM from the command line

$ sed -i '1s/^/\xef\xbb\xbf/' file-encoded-with-utf8.txt

~ /home 🏠 ~ talks 💬 ~ bash ~ craftsmanship ~ db ~ dongxi ~ emacs ~ escenic ~ iam ~ java ~ js ~ language ~ latex ~ ldap ~ life ~ linux ~ llm ~ mac-os-x ~ mt-foo ~ network ~ norsk ~ python ~ quotes ~ running ~ security ~ travel ~ unix ~ various ~ vcs ~ webdesign ~ windows ~ discoveries ~ cv 🧙 ~

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