text-files

What is the easiest way to add a text to the beginning of another text file in Command Line (Windows)? DarkwingDuck echo "my line" > newFile.txt type myOriginalFile.txt >> newFile.txt type newFile.txt > myOriginalFile.txt Untested. Double >> means 'append' Another variation on the theme. (echo New Line 1) >file.txt.new type file.txt >>file.txt.new move /y file.txt.new file.txt Advantages over other posted answers: minimal number of steps no temp file left over parentheses prevents unwanted trailing space in first line the move command "instantaneously" replaces the old version with the new the

I have a repository with a lot of autogenerated source files I've marked as "binary" in .gitattributes (they are checked in because not everyone has access to the generator tools). Additionally, the repo has a lot of source-ish files in ignored directories (again, generated as part of the build processes), and a number of actual binary files (e.g. little resource files like icons). I'd now like to find all the non-auto-generated and non-ignored files in the repo. I thought I'd just do this with find and a bunch of exclusions, but now I have a horrendous find statement with a dozen clauses (and

I'm trying to read a file in python (scan it lines and look for terms) and write the results- let say, counters for each term. I need to do that for a big amount of files (more than 3000). Is it possible to do that multi threaded? If yes, how? So, the scenario is like this: Read each file and scan its lines Write counters to same output file for all the files I've read. Second question is, does it improve the speed of read/write. Hope it is clear enough. Thanks, Ron. I agree with @aix, multiprocessing is definitely the way to go. Regardless you will be i/o bound -- you can only read so fast,

As far as know in the end of all files, specially text files, there is a Hex code for EOF or NULL character. And when we want to write a program and read the contents of a text file, we send the read function until we receive that EOF hexcode. My question : I downloaded some tools to see a hex view of a text file. but I can't see any hex code for EOF (End Of File/NULL) or EOT (End Of Text) ASCII/Hex code tables : This is output of Hex viewer tools: Note : My input file is a text file that its content is "Where is hex code of "EOF"?" Appreciate your time and consideration. There is no such

i want to process a text file line by line. In the olden days i loaded the file into a StringList : slFile := TStringList.Create(); slFile.LoadFromFile(filename); for i := 0 to slFile.Count-1 do begin oneLine := slFile.Strings[i]; //process the line end; Problem with that is once the file gets to be a few hundred megabytes, i have to allocate a huge chunk of memory; when really i only need enough memory to hold one line at a time. (Plus, you can't really indicate progress when you the system is locked up loading the file in step 1). The i tried using the native, and recommended, file I/O

I am new to Fortran, and I would like to be able to write a two-dimensional array to a text file, in a row-wise manner (spaces between columns, and each row on its own line). I have tried the following, and it seems to work in the following simple example: PROGRAM test3 IMPLICIT NONE INTEGER :: i, j, k, numrows, numcols INTEGER, DIMENSION(:,:), ALLOCATABLE :: a numrows=5001 numcols=762 ALLOCATE(a(numrows,numcols)) k=1 DO i=1,SIZE(a,1) DO j=1,SIZE(a,2) a(i,j)=k k=k+1 END DO END DO OPEN(UNIT=12, FILE="aoutput.txt", ACTION="write", STATUS="replace") DO i=1,numrows WRITE(12,*) (a(i,j), j=1,numcols

I have a text file which contains a table comprised of numbers e.g: 5 10 6 6 20 1 7 30 4 8 40 3 9 23 1 4 13 6 if for example I want the numbers contained only in the second column, how do i extract that column into a list? f=open(file,"r") lines=f.readlines() result=[] for x in lines: result.append(x.split(' ')[1]) f.close() You can do the same using a list comprehension print [x.split(' ')[1] for x in open(file).readlines()] Docs on split() string.split(s[, sep[, maxsplit]]) Return a list of the words of the string s . If the optional second argument sep is absent or None, the words are

I am comparing text files in junit using: public static void assertReaders(BufferedReader expected, BufferedReader actual) throws IOException { String line; while ((line = expected.readLine()) != null) { assertEquals(line, actual.readLine()); } assertNull("Actual had more lines then the expected.", actual.readLine()); assertNull("Expected had more lines then the actual.", expected.readLine()); } Is this a good way to compare text files? What is preferred? IAdapter junit-addons has nice support for it: FileAssert It gives you exceptions like: junitx.framework.ComparisonFailure: aa Line [3]

I have a large server log file (~750 MB) which I can't open with either Notepad or Notepad++ (they both say the file is too large). Can anyone suggest a program (for Windows) that will only read a small part of the file into memory at a time? Or do I need to write my own app to parse this file? Daniel Silveira try this... Large Text File Viewer By the way, it is free :) But, I think you should ask this on serverfault.com instead If all you need is a tool for reading, then this thing will open the file instantly http://www.readfileonline.com/ use EmEditor , it's pretty good, i used it to open a