Ruby:Read a Text File

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Read Text File

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Use each_line

You can open a text file and read each line.

This code iterates over each line of the file.

The text file http://progzoo.net/haggis.txt includes some lines of text.

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File.open('haggis.txt').each_line{ |s| puts s }

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test text

 

 

 

 

or

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File.foreach('haggis.txt') { |s| puts s }

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test text

 

 

 

 

Use gets

You can open a text file and use the gets method.

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f = File.open('haggis.txt') s = f.gets puts s

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test text

 

 

 

 

Use readlines

You can open a text file and use the readlines method.

In this example all lines are read into array a. We print out line number 2 (the third line).

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f = File.open('haggis.txt') a = f.readlines puts a[2]

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test text