linux - How to delete lines starting with certain numbers in a file? -

simple question here i'm kinda stuck.

let's have file 20 lines , 4 columns. first column number (1 20).

i have other file few numbers in this

1 4 19 

now, how can delete line (in first file) starting numbers in second file. main problem if sed, number 1 10, 11, 12, , on. how can right way?

thanks lot!

edit: examples

file1

1                   2       b       b       b 3       c       c       c 4       d       d       d 5       e       e       e 6       f       f       f 7       g       g       g 8       h       h       h 9                   10      j       j       j 11      k       k       k 12      l       l       l 13      m       m       m 14      n       n       n 15      o       o       o 16      p       p       p 17      q       q       q 18      r       r       r 19      s       s       s 20      t       t       t 

file2

1 4 19 

the result want:

2       b       b       b 3       c       c       c 5       e       e       e 6       f       f       f 7       g       g       g 8       h       h       h 9                   10      j       j       j 11      k       k       k 12      l       l       l 13      m       m       m 14      n       n       n 15      o       o       o 16      p       p       p 17      q       q       q 18      r       r       r 20      t       t       t 

you can use awk this:

awk 'fnr==nr{a[$1]; next} !($1 in a)' file2 file1 2       b       b       b 3       c       c       c 5       e       e       e 6       f       f       f 7       g       g       g 8       h       h       h 9                   10      j       j       j 11      k       k       k 12      l       l       l 13      m       m       m 14      n       n       n 15      o       o       o 16      p       p       p 17      q       q       q 18      r       r       r 20      t       t       t 

breakup of awk command:

fnr == nr {                  # while processing file2   a[$1]                      # store 1st field in array   next                       # move next record }                              # while processing file1 !($1 in a)                   # print row file1 if 1st field not in array 'a'