notebooks - Searching a phrase in all *.nb files

I have so many *.nb files in a folder. In one of them I have written a phrase, unfortunately I cannot remember that file. I am searching about it and the file in which I have written. Is there any way to search to Find a proposed phrase or word? I have used Find but it just work in an opened file not all files in the folder!

Answer

Here is a way to search from within mathematica:

notebooks = Quiet@FileNames["*.nb", NotebookDirectory[], 2];
Monitor[Select[
   Table[{nb, 

     StringJoin@Select[ StringSplit[Import[nb, "Plaintext"], "\n"] ,
        ((If[#, Print["match on:", nb]]; #) &@
             StringMatchQ[#, "*NIntegrate*"]) &, 5]},
                {nb,notebooks}], #[[2]] != "" &], {nb}] // Grid[#, Alignment -> {Left, Top}, Dividers -> All] &

This is painfully slow, but it does just search and show only the plain text of the notebook.

Comments

functions - Get leading series expansion term?

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How to remap graph properties?

Graph objects support both custom properties, which do not have special meanings, and standard properties, which may be used by some functions. When importing from formats such as GraphML, we usually get a result with custom properties. What is the simplest way to remap one property to another, e.g. to remap a custom property to a standard one so it can be used with various functions? Example: Let's get Zachary's karate club network with edge weights and vertex names from here: http://nexus.igraph.org/api/dataset_info?id=1&format=html g = Import[ "http://nexus.igraph.org/api/dataset?id=1&format=GraphML", {"ZIP", "karate.GraphML"}] I can remap "name" to VertexLabels and "weights" to EdgeWeight like this: sp[prop_][g_] := SetProperty[g, prop] g2 = g // sp[EdgeWeight -> (PropertyValue[{g, #}, "weight"] & /@ EdgeList[g])] // sp[VertexLabels -> (# -> PropertyValue[{g, #}, "name"]...

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