Following is the example to rename an existing file test1 txt usr bin ruby rename a file from test1 txt to test2 txt file rename test1 txt test2 txt following is the example to delete an existing file.
Ruby delete file if exists.
Removing single file in ruby is simple and straightforward with file delete.
Returns true if a record exists in the table that matches the id or conditions given or false otherwise.
File includes the methods of module filetest as class methods allowing you to write for example file exist foo.
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You can rename and delete files programmatically with ruby with the rename and delete methods.
Read the file the whole file line by line or a specific amount of bytes.
Integer finds the record with this primary key.
On unix based systems permissions are.
Open the file with the open method.
If the file argument is a symbolic link it will resolve the symbolic link and use the file referenced by the link.
String finds the record with a primary key corresponding to this string such as 5.
If a file already exists but does not match update that file to match create if missing create a file only if the file does not exist.
The only difference between two methods is file exist will also return true for directories.
The file exist the function checks whether or not a file or.
You can read a file in ruby like this.
Renaming and deleting files.
The following tutorial describe how to delete files and directories that you no longer need in your application.
Array finds the record that matches these find style conditions such as color red.
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Use the file class to open a file.
File delete path to file if file exist path to file removing a directory.
Close the file with the close method.
Checking whether a file exists or not is one of the most basic file related tasks which you will do most of the times and thankfully ruby s file class provides two methods called file file file exist to test file existence.
When the file exists nothing happens delete delete a file nothing this resource block does not act unless notified by another resource to take action.
This method deletes the named files returning the number of names passed as.
The argument can take five forms.
In the description of file methods permission bits are a platform specific set of bits that indicate permissions of a file.
Returns true if the named file exists and is a regular file.
File can be an io object.
Here is the process in detail.
