R: countTextLines: Counting lines in text files.

countTextLines {rbamtools} | R Documentation

## countTextLines: Counting lines in text files.

### Description

The countTextLines function takes a filename vector and returns the number of lines contained in each file.

### Usage

    countTextLines(filenames)

### Arguments

`filenames` | Character. Vector of file-names to be opened.

### Details

Fastq files usually (but not guaranteed) contain four lines of text for each read. In many cases, this function can be used to count the number of reads in a fastq file.

### Examples

    filename <- system.file("extdata", "test.fastq", package="rbamtools")
    countTextLines(filename)

[Package rbamtools version 2.16.17 Index]