This simple one-liner allows conversion of an IP address from decimal to binary. I came up with this after playing around with cut and grep.
homer@deusexmachina ~/Documents $ ipcalc 172.18.31.2 | grep Address | cut -b 33-68 10101100.00010010.00011111. 00000010 |
The -b parameter to cut will only show certain bytes in the output of a command. useful if you do not want to use an extremely complex awk or sed one liner and you want to get just the data that you want.
Do you want to get the IP address of a host? Here is a useful way to do this.
homer@deusexmachina ~/Documents $ gethostip -d google.cn 74.125.31.160 |
This command will get the IP address of a local or remote host.
Another way to get information about a remote or local host is using the sipcalc command. This is easily installed on a Linux system and will allow you to get comprehensive information. Type yum install sipcalc on Fedora to install this useful command.
[homer@localhost ~]$ sipcalc -a 172.18.31.2/24 -[ipv4 : 172.18.31.2/24] - 0 [Classful] Host address - 172.18.31.2 Host address (decimal) - 2886868738 Host address (hex) - AC121F02 Network address - 172.18.0.0 Network class - B Network mask - 255.255.0.0 Network mask (hex) - FFFF0000 Broadcast address - 172.18.255.255 [CIDR] Host address - 172.18.31.2 Host address (decimal) - 2886868738 Host address (hex) - AC121F02 Network address - 172.18.31.0 Network mask - 255.255.255.0 Network mask (bits) - 24 Network mask (hex) - FFFFFF00 Broadcast address - 172.18.31.255 Cisco wildcard - 0.0.0.255 Addresses in network - 256 Network range - 172.18.31.0 - 172.18.31.255 Usable range - 172.18.31.1 - 172.18.31.254 [Classful bitmaps] Network address - 10101100.00010010.00000000.00000000 Network mask - 11111111.11111111.00000000.00000000 [CIDR bitmaps] Host address - 10101100.00010010.00011111.00000010 Network address - 10101100.00010010.00011111.00000000 Network mask - 11111111.11111111.11111111.00000000 Broadcast address - 10101100.00010010.00011111.11111111 Cisco wildcard - 00000000.00000000.00000000.11111111 Network range - 10101100.00010010.00011111.00000000 - 10101100.00010010.00011111.11111111 Usable range - 10101100.00010010.00011111.00000001 - 10101100.00010010.00011111.11111110 [Networks] Network - 172.18.31.0 - 172.18.31.255 (current) - |
The sipcalc command may also be used to show all IP addresses available on a network. This example shows how this works.
homer@deusexmachina ~/Documents $ sipcalc -a 172.18.31.2 -[ipv4 : 172.18.31.2] - 0 [Classfull] Host address - 172.18.31.2 Host address (decimal) - 2886868738 Host address (hex) - AC121F02 Network address - 172.18.0.0 Network class - B Network mask - 255.255.0.0 Network mask (hex) - FFFF0000 Broadcast address - 172.18.255.255 [CIDR] Host address - 172.18.31.2 Host address (decimal) - 2886868738 Host address (hex) - AC121F02 Network address - 172.18.31.2 Network mask - 255.255.255.255 Network mask (bits) - 32 Network mask (hex) - FFFFFFFF Broadcast address - 172.18.31.2 Cisco wildcard - 0.0.0.0 Addresses in network - 1 Network range - 172.18.31.2 - 172.18.31.2 [Classfull bitmaps] Network address - 10101100.00010010.00000000.00000000 Network mask - 11111111.11111111.00000000.00000000 [CIDR bitmaps] Host address - 10101100.00010010.00011111.00000010 Network address - 10101100.00010010.00011111.00000010 Network mask - 11111111.11111111.11111111.11111111 Broadcast address - 10101100.00010010.00011111.00000010 Cisco wildcard - 00000000.00000000.00000000.00000000 Network range - 10101100.00010010.00011111.00000010 - 10101100.00010010.00011111.00000010 [Networks] Network - 172.18.31.0 - 172.18.31.0 Network - 172.18.31.1 - 172.18.31.1 Network - 172.18.31.2 - 172.18.31.2 (current) Network - 172.18.31.3 - 172.18.31.3 Network - 172.18.31.4 - 172.18.31.4 Network - 172.18.31.5 - 172.18.31.5 Network - 172.18.31.6 - 172.18.31.6 Network - 172.18.31.7 - 172.18.31.7 Network - 172.18.31.8 - 172.18.31.8 Network - 172.18.31.9 - 172.18.31.9 Network - 172.18.31.10 - 172.18.31.10 Network - 172.18.31.11 - 172.18.31.11 Network - 172.18.31.12 - 172.18.31.12 Network - 172.18.31.13 - 172.18.31.13 Network - 172.18.31.14 - 172.18.31.14 Network - 172.18.31.15 - 172.18.31.15 Network - 172.18.31.16 - 172.18.31.16 Network - 172.18.31.17 - 172.18.31.17 Network - 172.18.31.18 - 172.18.31.18 Network - 172.18.31.19 - 172.18.31.19 Network - 172.18.31.20 - 172.18.31.20 Network - 172.18.31.21 - 172.18.31.21 Network - 172.18.31.22 - 172.18.31.22 Network - 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