regex101: Find a IPV4

Group 1([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[0-9]{1,3}

{1,3}matches between 1 and 3 characters from the set below:

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Search reference

Regular Expression

([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})

New


Starting Nmap 6.47 ( http://nmap.org ) at 2015-05-26 22:43 ric
Initiating ARP Ping Scan at 22:43
Scanning 254 hosts [1 port/host]
Completed ARP Ping Scan at 22:43, 10.61s elapsed (254 total hosts)
Initiating Parallel DNS resolution of 254 hosts. at 22:50
Completed Parallel DNS resolution of 

254 hosts. at 22:50, 16.50s elapsed
Nmap scan report for 192.168.1.0 [host down]
Nmap scan report for 192.168.1.2 [host down]
Nmap scan report for 192.168.1.3 [host down]
Nmap scan report for 192.168.1.4 [host down]
Nmap scan report for 192.168.1.5 [host down]
Nmap scan report for 192.168.1.7 [host down]
Nmap scan report for 192.168.1.8 [host down]
Nmap scan report for 192.168.1.9 [host down]
Nmap scan report for 192.168.1.10 [host down]

Regular Expressions 101

Regular Expression

Substitution