awk处理跨行（多行）记录的文件

https://www.gnu.org/software/gawk/manual/html_node/Multiple-Line.html

设置RS=""; FS="\n"，表示field seperator是换行符，record seperator是空行：

# Records are separated by blank lines. # Each line is one field. BEGIN { RS = "" ; FS = "\n" } { print "Name is:", $1 print "Address is:", $2 print "City and State are:", $3 print "" }