Pick a gist and run it

gitsplz.sh

#!/bin/sh

set -eu

tmp_file=$(mktemp) && echo -e '#!/bin/sh\nexit 0' > "$tmp_file" && chmod +x "$tmp_file" && "$tmp_file" || tmp_file=$(mktemp -p "$HOME") || exit 1
gists=$(curl -s https://api.github.com/users/VSharapov/gists | jq -r '.[].files[].raw_url')
[ -z "$gists" ] && exit 1
selected_gist=$(echo "$gists" | fzf) || select selected_gist in $gists; do break; done
curl -s "$selected_gist" -o "$tmp_file" && chmod +x "$tmp_file" && "$tmp_file" "@"
rm -i "$tmp_file"