text-files – Page 6 – Tarik Billa

In C, how should I read a text file and print all strings

December 20, 2022 by Tarik

The simplest way is to read a character, and print it right after reading: int c; FILE *file; file = fopen(“test.txt”, “r”); if (file) { while ((c = getc(file)) != EOF) putchar(c); fclose(file); } c is int above, since EOF is a negative number, and a plain char may be unsigned. If you want to … Read more

How to jump to a particular line in a huge text file?

December 20, 2022 by Tarik

You can’t jump ahead without reading in the file at least once, since you don’t know where the line breaks are. You could do something like: # Read in the file once and build a list of line offsets line_offset = [] offset = 0 for line in file: line_offset.append(offset) offset += len(line) file.seek(0) # … Read more

How do I concatenate two text files in PowerShell?

December 9, 2022 by Tarik

Simply use the Get-Content and Set-Content cmdlets: Get-Content inputFile1.txt, inputFile2.txt | Set-Content joinedFile.txt You can concatenate more than two files with this style, too. If the source files are named similarly, you can use wildcards: Get-Content inputFile*.txt | Set-Content joinedFile.txt Note 1: PowerShell 5 and older versions allowed this to be done more concisely using … Read more

How to create and write to a txt file using VBA

December 8, 2022 by Tarik

Use FSO to create the file and write to it. Dim fso as Object Set fso = CreateObject(“Scripting.FileSystemObject”) Dim oFile as Object Set oFile = FSO.CreateTextFile(strPath) oFile.WriteLine “test” oFile.Close Set fso = Nothing Set oFile = Nothing See the documentation here: http://technet.microsoft.com/en-us/library/ee198742.aspx http://technet.microsoft.com/en-us/library/ee198716.aspx

Find lines from a file which are not present in another file [duplicate]

December 2, 2022 by Tarik

The command you have to use is not diff but comm comm -23 a.txt b.txt By default, comm outputs 3 columns: left-only, right-only, both. The -1, -2 and -3 switches suppress these columns. So, -23 hides the right-only and both columns, showing the lines that appear only in the first (left) file. If you want … Read more

Read each line of txt file to new array element

December 2, 2022 by Tarik

If you don’t need any special processing, this should do what you’re looking for $lines = file($filename, FILE_IGNORE_NEW_LINES);

How to add new line into txt file

November 30, 2022 by Tarik

You could do it easily using File.AppendAllText(“date.txt”, DateTime.Now.ToString()); If you need newline File.AppendAllText(“date.txt”, DateTime.Now.ToString() + Environment.NewLine); Anyway if you need your code do this: TextWriter tw = new StreamWriter(“date.txt”, true); with second parameter telling to append to file. Check here StreamWriter syntax.