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

sed -n '  # Do not print by default
  /X/{ 
     # pattern space holds 'X noise STUFF1 noise STUFF2 noise'
     s/.*\(STUFF1).*\(STUFF2\).*/\1 \2/
     # pattern space holds 'STUFF1 STUFF2'
     # add stuff from pattern space to hold space with __leading newline__
     H
     # hold space holds '\nSTUFF1 STUFF2'
     # use l to inspect
     d
  }
  /Y/{
     s/.*\(…\).*/\1/p
     H
     # hold space holds '\nSTUFF1 STUFF2\nSTUFF3'
     d
  }
  ${  # last line?
     # switch hold space with pattern space
     x
     # we have '\nSTUFF1 STUFF2\nSTUFF3' in paterrn space, let's make it nice with spaces
     s/\n/ /g
     s/  */ /g
     s/^ *//g
     s/ *$//g
     # print it
     p
  }
'

sed -En '/^X/h;/^Y/{G;s/\s+/ /g;s/.*/echo "&"|cut -d" " -f3,7,9/ep}' file