Regular Expressions 101

\ba Unicode word boundary

Ciscothe literal text Cisco (case sensitive)

\s+a Unicode whitespace character, repeated at least once

Group 1(.*?)

.*?any Unicode character (except for line terminators), repeated any number of times

\s+a Unicode whitespace character, repeated at least once

Softwarethe literal text Software (case sensitive)

\ba Unicode word boundary

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\bCisco\s+(.*?)\s+Software\b

New

string-1: Cisco IOS XR Software, Version 5.3.4[Default]

String-2: Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.4(3)M3, RELEASE SOFTWARE (fc2)

String-3: Cisco Nexus Operating System (NX-OS) Software

String-4: Cisco IOS XE Software, Version 16.05.01b Cisco IOS Software [Everest], ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.5.1b, RELEASE SOFTWARE (fc1)

IOS XR IOS Nexus Operating System IOS XE

Regular Expression

Substitution