var $contents = _readFile("users.txt");

_writeFile("First Line", "out.txt", true); // over writes content in file
_writeFile("Second Line", "out.txt"); // appends second line in file

_deleteFile("out.txt"); // deletes out.txt

_fileExists("out.txt"); // returns true if out.txt exists.

_renameFile("original.txt", "renamed.txt"); // renames original.txt to renamed.txt
_renameFile("original.txt", "newPath/renamed.txt"); // moves and renames original.txt to newPath/renamed.txt

_copyFile("source.txt", "dest.txt"); // copies the source.txt into dest.txt

1,Ram,18,Male
2,Sam,20,Male

var $userinfo = _readCSVFile("data/userinfo.csv");
var $userName = $userinfo[0]; // returns 2,Sam,20,Male since includeHeader default value is false

1,Ram,18,Male
,
2,Sam,20,Male

var $employee = _readCSVFile("data/userinfo.csv");
var $employee1 = _readCSVFile("data/userinfo.csv", {includeHeader:true});
var $employee2 = _readCSVFile("data/userinfo.csv", {wordSeparator:";",includeHeader:true,ignoreEmptyRows:true});
var $csvLength = $employee.length // returns 2 since includeHeader default value is false
var $csvLength1 = $employee1.length // returns 3
var $csvLength2 = $employee2.length // returns 1 since ignoreEmptyRows and includeHeader are true

infoNOTE: $forceQuotes was added Since Sahi Pro: 6.2.0. For old document Refer here

             $padEmptyCells was added Since Sahi Pro: 7.0.0. For old document Refer here

var $data = [];
$data[0] = ["1", "Ram", 18, "Male"];
$data[1] = ["2", "Sam", 20];

_writeCSVFile($data, "data/userinfo.csv", false, ",", true, true);
//forces data to be inside quotes with specified word separator and empty cells at the end of rows are not trimmed.
//appends data into userinfo.csv.

var $moreData = [["3", "Lak", 30, "Male","Married"]];
_writeCSVFile($moreData, "data/userinfo.csv", false, ",", true, true);

"1","Ram","18","Male",""
"2","Sam","20","",""
"3","Lak","30","Male","Married"