需要帮助理解“sed -e:a -e”$!/ * \ n \(^”]\)/ \ 1 /;ta ' e ' P;D '文件”

I have a source file containing 15 columns and some columns have a new line character within the data and I need to delete them preserving the record delimiter which also happens to be the new line character.I have a source file containing 15 columns and