Regular Expressions 101

^start of line

Group 1(\S+\s+){3}

{3}repeats the group contents below exactly 3 times:

\S+any non-whitespace character, repeated at least once

\s+any whitespace character, repeated at least once

Group originating(?<originating>\S+)

\S+any non-whitespace character, repeated at least once

\s+any whitespace character, repeated at least once

Group exchange(?<exchange>\S+)

\S+any non-whitespace character, repeated at least once

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

^(\S+\s+){3}(?<originating>\S+)\s+(?<exchange>\S+)

New

#000#000#000031419      102900107    8*902    17145550104     71234            88888 0 0244 71247 0 0000101 #015
#000#000#000031419      132500329     #060              713312155555331         50042424     25331    0    0000316    #015

Regular Expression

Substitution