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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 filei.
FindList[files, text, n]
includes only the first n lines found.
  • 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 "name" 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.
Get a list of lines in a file that contains "electors":
The first two lines that contain "electors":
Get a list of lines in a file that contains "electors":
In[1]:=
Click for copyable input
Out[1]=
 
The first two lines that contain "electors":
In[1]:=
Click for copyable input
Out[1]=
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