Question

what would be the best way to remove whitespace only around certain character. Let’s say a dash – Some- String- 12345- Here would become Some-String-12345-Here. Something like sed 's/\ -/-/g;s/-\ /-/g' but I am sure there must be a better way.

Thanks!

Answer 1

If you mean all whitespace, not just spaces, then you could try \s:

echo 'Some- String- 12345- Here' | sed 's/\s*-\s*/-/g'

Output:

Some-String-12345-Here

Or use the [:space:] character class:

echo 'Some- String- 12345- Here' | sed 's/[[:space:]]*-[[:space:]]*/-/g'

Different versions of sed may or not support these, but GNU sed does.