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Regular Expression
r"
Version\s(\d+\.\d+(?:\([^()+]\)[A-Z]\d|\.\d{2}[a-z]))
"
gm
Input 1
New
String 1-Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.4(3)M3, RELEASE SOFTWARE (fc2) ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1) String2-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) licensed under the GNU General Public License ("GPL") Version 2.0. The software code licensed under GPL Version 2.0 is free software that comes GPL code under the terms of GPL Version 2.0. For more details, see the
Extraction
String 1-Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.4(3)M3, RELEASE SOFTWARE (fc2) ROM: System Bootstrap, Version 15.0(1r)M16, RELEASE SOFTWARE (fc1) String2-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) licensed under the GNU General Public License ("GPL") Version 2.0. The software code licensed under GPL Version 2.0 is free software that comes GPL code under the terms of GPL Version 2.0. For more details, see the