FindList

FindList["file", "text"]
gives a list of lines in the file that contain the specified string.

FindList["file", {"text1", "text2", ...}]
gives a list of all lines that contain any of the specified strings.

FindList[{"file1", ...}, ...]
gives a list of lines containing the specified strings in any of the .

FindList[files, text, n]
includes only the first n lines found.

Details and OptionsDetails and Options

  • FindList returns if it fails to find any record which contains the specified text.
  • The following options can be given:
  • AnchoredSearchFalsewhether to require that the text searched for be at the beginning of a record
    IgnoreCaseFalsewhether to treat lowercase and uppercase as equivalent
    RecordSeparators{"\r\n", "\n","\r"}separators for records
    WordSearchFalsewhether to require that the text searched for appear as a word
    WordSeparators{" ","\t"}separators for words
  • The first argument to FindList can be InputStream["name", n], or simply if there is only one open input stream with the specified name.
  • If FindList opens a file or pipe, it closes it again when it has finished.

ExamplesExamplesopen allclose all

Basic Examples (2)Basic Examples (2)

Get a list of lines in a file that contains :

In[1]:=
Click for copyable input
Out[1]=

The first two lines that contain :

In[1]:=
Click for copyable input
Out[1]=
New in 2
New to Mathematica? Find your learning path »
Have a question? Ask support »