[#!] #! ./tesh -> #!/usr/bin/env tesh

[#!] #! ./tesh -> #!/usr/bin/env tesh

find . \
    -type f \
    -not -iwholename '*.git*' \
    -exec sed -i -e 'sW#!\s*\./teshW#!/usr/bin/env teshWg' {} \;