Execute terminal command using ">" in java

Question

I want to redirect the output to text file using Runtime.getRuntime().exec("ls > 1.txt") but it doesn't work. I tried by passing string array instead of string but it didn't work.Other commands such as opening open is working fine.

Is there any solution to redirect the output to a text file.

Aaron · Accepted Answer · 2016-04-28T13:34:53.057

2

Using Runtime.exec() is bad practice, you should use a ProcessBuilder.
ProcessBuilder has a .redirectOutput() method which enables you to define where you want to receive the process' output.

edited Apr 28 '16 at 13:34

answered Apr 28 '16 at 13:24

Aaron

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Thanks for the suggestion. Is there any method to append the data to the existing file like using ">>" ? – Apr 28 '16 at 13:44
Yes there is : the `.redirectOutput()` expects a `ProcessBuilder.Redirect`, which can be either `ProcessBuilder.Redirect.to(File f)`, overwriting the file, or `ProcessBuilder.Redirect.appendTo(File f)` where it will append as would `>>` – Aaron Apr 28 '16 at 13:46

Execute terminal command using ">" in java

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