sed isn't working as expected with range and curly braces.

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I'm listening to "Linux Shell Scripting - Advanced" course and couldn't make sed to make changes in range. What am I doing wrong?

cat 1
one two
two two
three two

cat 1 | sed '2{s/two/four/; s/two/five/}'
sed: 1: "2{s/two/four/; s/two/fi ...": bad flag in substitute command: '}'

Though:

cat 1 | sed -e '2s/two/four/; 2s/two/five/'
one two
four five
three two

and:

sed '2{
> s/two/four/
> s/two/five/
> }' 1
one two
four five
three two

Hey @Oleg-Bobokalonov,

This is a good question. It seems to be a versioning issue. I am running sed v4.7 and all three of your examples worked for me.

Justin was using sed v4.5 and he did receive an error as well, but but it was a different error. He then upgraded to sed v4.7 and now all three examples work for him. I can only assume this would be true for you.

So try upgrading sed and see if that works for you.

Cheers,

Daniel Lowrie and Justin Dennison

Thanks,
It's MAC OS issue. I installed gnu-sed, and gsed(gsed (GNU sed) 4.7) worked as expected:

cat 1 | gsed '2{s/two/four/; s/two/five/}'
one two
four five
three two