Linux: Parse an IP Address

To parse an IP address in Linux, you can use a combination of the awk and cut commands.

The awk command is a text processing utility that can be used to extract and manipulate text data. The cut command is a utility that is used to extract fields from a file or input.

To parse an IP address using the awk and cut commands, you can use the following command:

$ echo "IP_ADDRESS" | awk -F. '{print $1 "." $2 "." $3 "." $4}' | cut -d. -f4

This command will extract the fourth field (the last octet) of the IP address. You can replace 4 with any other field number to extract a different field of the IP address.

For example, to extract the first field (the first octet) of the IP address, you can use the following command:

$ echo "IP_ADDRESS" | awk -F. '{print $1 "." $2 "." $3 "." $4}' | cut -d. -f1

You can also use the awk command alone to extract a field of the IP address. To extract the fourth field (the last octet) of the IP address using the awk command, you can use the following command:

$ echo "IP_ADDRESS" | awk -F. '{print $4}'

Note that these commands assume that the IP address is in the standard xxx.xxx.xxx.xxx format. If the IP address is in a different format, you may need to modify the commands to suit your needs.

You can also use other text processing utilities, such as sed or grep, to parse an IP address in Linux. The specific command that you use will depend on the format of the IP address and the information that you want to extract.