I want commas in middle spaces not at the end, but here I got commas at the end also...

AFAICT, your problem arises from using \s in the substitution s/\s/,/g, instead of a plain space character, i.e. s/ /,/g.

\s stands for "whitespace", which includes newline (\n), so the newlines are turned into commas, too.

In reply to Re: replace middle spaces with commas by Anonyrnous Monk
in thread replace middle spaces and write to another file by sufi

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