R: Determine number of lines in a text file

determine_nlines {LaF} | R Documentation

## Determine number of lines in a text file

### Description

Determine number of lines in a text file

### Usage

    determine_nlines(filename)

### Arguments

`filename` | character containing the filename of the file of which the lines are to be counted.

### Details

The routine counts the number of line endings. If the last line does not end in a line ending, but does contain character, this line is also counted.

The file size is not limited by the amount of memory in the computer.

### Value

Returns the number of lines in the file.

### See Also

See `readLines` to read in all lines a text file; `get_lines` and `sample_lines` can be used to read in specified, or random lines.

### Examples

    # Create temporary filename
    tmpcsv  <- tempfile(fileext="csv")

    # Generate file
    writeLines(letters[1:20], con=tmpcsv)

    # Count the lines
    determine_nlines(tmpcsv)

    # Cleanup
    file.remove(tmpcsv)

[Package LaF version 0.8.4 Index]