STUDENT DETAILS

NAME MARKS STD

XYZ 20 I

RANK SCHOOL TEACHER GRADE

5 TTT ANON B

POSITION

5

STUDENT DETAILS

NAME MARKS STD

ABC              40                I

RANK SCHOOL TEACHER GRADE

5 TTT ANON A

POSITION

5

NAME MARKS STD RANK SCHOOL TEACHER GRADE POSITION

XYZ  20     I   5    TTT   ANON    B     5

ABC  40     I   5    TTT   ANON    A     5

awk '/STUDENT DETAILS/{nr[NR];nr[NR+2]; nr[NR+5]; nr[NR+8]}; END {for (i in nr) print nr[i]}' file.txt > filenew.txt