问使用sed重新排序“有趣的”文本

EN

$ sed -n '/^X/{s/.[^[:upper:]]*\([[:alnum:]]*\)/\1 /g;h};/^Y/{s/.[^[:upper:]]*\([[:alnum:]]*\)/\1 /g;G;s/\n//p}' file
STUFF3  STUFF1 STUFF2

$ cat script.sed
/^X/{                                         #Match line beginning with X
    s/.[^[:upper:]]*\([[:alnum:]]*\)/\1 /g    #As you know how to extract what you need, this is just for your sample data to extract needed strings
    h                                         #Retain the output of the substitution in the hold buffer
}
/^Y/{                                          #Match line beginning with Y
    s/.[^[:upper:]]*\([[:alnum:]]*\)/\1 /g    #Same as above
    G                                         #Append the contents of the hold space
    s/\n//p                                   #Remov the new line
}

sed -nf script.sed file
STUFF3  STUFF1 STUFF2