insert lines in text to get one word

perl -pi -e 's/ /\n/g' 01_Gen-words.txt

remove blank lines

to delete empty lines: from line 633 to the end of the document: :633,$g/^$/d the $ represents the end of the file, the ^$ represents a blank line, and the d - delete do delete all empty lines, globally: :g/^$/d and an alternate version: :v/./d
If you want to delete blank lines or those that contain spaces or tabs, use: :g/^\s*$/d and an alternate version: :v/\S/d \S matches anything that is not a whitespace, and d deletes the flagged lines (all lines that have only whitespace characters or are blank).








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