TCL scripting - searching for a IP address in a string

Mr. Zer0 · #1 (**permalink**) 10-06-2009

Hi All,

Can anyone please help me with the regular expression/code snippet to search for an IP address in a string with Tcl scripting.

Example string
"OSPF_NBRUP OSPF neighbor 16.138.181.15 (realm ospf-v2 e1-0/0/0:37.0 area 0.0.0.0) state changed from Full to Down due to KillNbr"

In the above string i want to find IP 16.138.181.15

radoulov · #2 (**permalink**) 10-06-2009

Something like this:

Code:

#!/usr/bin/tclsh 

set string "OSPF_NBRUP OSPF neighbor 16.138.181.15 (realm ospf-v2 e1-0/0/0:37.0 area 0.0.0.0) state changed from Full to Down due to KillNbr"

regexp {(?:\d+\.){3}\d+} $string matched

puts "matched is $matched"

It produces the following output:

Code:

% ./s  
matched is 16.138.181.15

ahmad.diab · #3 (**permalink**) 2 Weeks Ago

what does the below mean ... I am new in TCL and hope to benefit from this ...

Code:

{(?:\d+\.){3}\d+}

---------- Post updated at 07:26 AM ---------- Previous update was at 07:25 AM ----------

and is "puts" a command or just a word?

radoulov · #4 (**permalink**) 2 Weeks Ago

Quote:

Originally Posted by ahmad.diab

what does the below mean
[...]

Code:

{(?:\d+\.){3}\d+}

It's a regular expression that matches a sequence of 3 atoms of
one or more digit(s) followed by a literal dot[1] followed by one or more digit(s).

Quote:

[...]

Quote:

and is "puts" a command or just a word?

puts is a command.

[1]

Quote:

(?:.RE-a.) -- This modified version of grouping treats the enclosed regular expression atoms as an entity, but does not return the results in a match variable.

ahmad.diab · #5 (**permalink**) 2 Weeks Ago

Thanks man
BR

One more thing ..can you please recommend to me some books related to TCL & TK

---------- Post updated at 07:01 AM ---------- Previous update was at 06:58 AM ----------

Quote:

Originally Posted by ahmad.diab

Thanks man
BR

Quote:

One more thing ..can you please recommend to me some books related to TCL & TK

Thanks in advance

radoulov · #6 (**permalink**) 2 Weeks Ago

Quote:

Originally Posted by ahmad.diab

One more thing ..can you please recommend to me some books related to TCL & TK

I'm quite new to TCL too. I want to learn the language because of expect, which seems very interesting to me.
I purchased Exploring Expect on amazon and there is a quick TCL tutorial at the beginning of the book.
You could even consult it online on Google books.

I should add that the TCL group on USENET (comp.lang.tcl) is also a great resource.

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Bits Awarded / Charged to radoulov for this Post
Date	User	Comment	Amount
10-07-2009	frank_rizzo	N/A	50,000

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