In Linux, awk converts IP addresses to decimal to binary and numeric modes.

This article will introduce you to an example about how to convert IP addresses to binary and numeric MODES & convert decimal to binary in Linux. I hope this example will help you. This article will introduce you to an example about how to convert IP addresses to binary and numeric MODES & convert decimal to binary in Linux. I hope this example will help you.

[Root @ LookBack ~] # Echo 8.8.8.8 | awk-F. '{for (I = 1; I <= NF; I ++) {a = ""; B = $ I; while (B) {a = B % 2; B = int (B/2)} printf ("% 08d % s", a, I! = NF? ".": "\ N ")}}'
20171000.00001000.00001000.00001000
[Root @ LookBack ~] #
[Root @ LookBack ~] #
[Root @ LookBack ~] # Echo 8.8.8.8 | awk-F. '{printf "% d \ n", ($1*(2 ^ 24) + ($2*(2 ^ 16 )) + ($3*(2 ^ 8) + $4 }'
134744072
[Root @ LookBack ~] #
[Root @ LookBack ~] #
[Root @ LookBack ~] # Echo 00001000.00001000.00001000.00001000 | awk-F. 'function bin2dec (a, B, I, c) {B = length (a); c = 0; for (I = 1; I <= B; I ++) {c + = c; if (substr (a, I, 1) = "1") c ++} return c} {for (j = 1; j <= NF; j ++) printf ("% d % s", bin2dec ($ j), j! = NF? ".": "\ N ")}'
8.8.8.8
[Root @ LookBack ~] #
[Root @ LookBack ~] #
[Root @ LookBack ~] # Echo 1000.1000.1000.1000 | awk-F. 'function bin2dec (a, B, I, c) {B = length (a); c = 0; for (I = 1; I <= B; I ++) {c + = c; if (substr (a, I, 1) = "1") c ++} return c} {for (j = 1; j <= NF; j ++) printf ("% d % s", bin2dec ($ j), j! = NF? ".": "\ N ")}'
8.8.8.8
[Root @ LookBack ~] #
# Splitting description
Awk-F. '{# use. As a separator;
For (I = 1; I <= NF; I ++) {# divide the IP address into 4 segments and enter the loop in sequence;
A = ""; # define a variable. The current value of a is null;
B = $ I; # define a variable B value as the value that enters the cycle;
While (B) {#0 in the awk is false, so only B = 0 enters the cyclic body;
A = B % 2 a; # suppose B = 8 here a = 0 "" here "" is the role of a defined above, when B = 4 enters the cyclic body next time, a = 00, and B = 2 enters the cyclic body next time a = 000;
B = int (B/2) # Here is the part of the result integer calculated in the simulated decimal to binary format divided by 2;
}
Printf ("% 08d % s", a, I! = NF? ".": "\ N") # here is actually if (I! = NF) {printf "% 08d", a} else {printf "% 08d \ n", a} Three-way writing method, to print 8 bits of binary less than 0 complement;
}
}'
### The following is the online awk Implementation of decimal to Binary Conversion
# Https://www.cs.ucsb.edu /~ Sherwood/awk/decimal2binary.awk.txt
#! /Usr/bin/gawk-f
#__________________________
#||||||__ |__] | ___
# |__/|__ | ___ | |||||| ___
#
# The scripts were written to be usefull in
# A research enviornment, but anyone is welcome
# To use them. Happy awking.-Tim Sherwood

Func get01string (innum, t, retstr, I ){
Retstr = "";
T = innum;
While (t ){
If (t % 2 = 0 ){
Retstr = "0" retstr;
}
Else {
Retstr = "1" retstr;
}
T = int (t/2 );
}
Return retstr;
}

{
Print get01string ($1 );
}