Bash check IP and Port

33 # check arguments
34
35 # check ip
36 pattern_ip = "^ ([0-9] | [1-9] [0-9] | 1 [0-9] {2} | 2 ([0-4] [0-9- 9] | 5 [0-5]) \.) {3} ([0-9] | [1-9] [0-9] | 1 [0-9] {2} | 2 ([0-4] [0 -9] | 5 [0-5]) $ "
37 # pattern_ip = "^ (1? [0-9]? [0-9] | 2 ([0-4] [0-9] | 5 [0-5]) \.) {3} (1? [0-9]? [0-9] | 2 ([0-4] [0-9] | 5 [0-5]) $"
38
39 If[[ !($1 =~ $ Pattern_ip) &&($3 =~ $ Pattern_ip)] ;  Then
40 Echo  "From_ip or to_ip has errors! "
41 Exit0
42 Fi
43
44 # check port
45 pattern_port = "^ ([0-9] {1, 4} | [1-5] [0-9] {4} | 6 [0-5] {2} [0-3] [0-5]) $ "
46 If[[ !($2 =~ $ Pattern_port)] ;  Then
47 Echo  "Port has erros! "
48 Exit0 ;
49 Fi