Doubts on sed (option -f, script-file)

I'm playing with sed.

echo "s/own/my/" > "/tmp/myscript.sed"
sed "--file=/tmp/myscript.sed" <<< "my own string"
my my string

If I do:

sed "-f /tmp/myscript.sed" <<< "my own string"
sed: cannot open file /tmp/myscript.sed: File or directory does not exist

Without double quotes around -f ...:

sed -f /tmp/myscript.sed <<< "my own string"
my my string

So, it works as expected. Anyone can explain it to me?



Read more here: https://stackoverflow.com/questions/65076512/doubts-on-sed-option-f-script-file

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