From: akr@...
Date: 2014-10-07T12:53:07+00:00
Subject: [ruby-core:65469] [ruby-trunk - Bug #10336] [Rejected] limit of number of arguments passed to system

Issue #10336 has been updated by Akira Tanaka.

Status changed from Open to Rejected

POSIX systems can have a limitation on the size of arguments.

Use spawn() to raise the execption on the error of execve(2):

```
% ruby -v -retc -e 's = "true " + "a" * Etc.sysconf(Etc::SC_ARG_MAX); p s.length; Process.wait spawn(s)'
ruby 2.2.0dev (2014-10-05 trunk 47803) [x86_64-linux]
2097157
-e:1:in `spawn': Argument list too long - true (Errno::E2BIG)
	from -e:1:in `<main>'
```


----------------------------------------
Bug #10336: limit of number of arguments passed to system
https://bugs.ruby-lang.org/issues/10336#change-49249

* Author: Victor Pereira
* Status: Rejected
* Priority: Normal
* Assignee: 
* Category: core
* Target version: 
* ruby -v: ruby 2.1.1p76 (2014-02-24 revision 45161) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
The following code snipped stops to work with argument bigger than 2274:

~~~
files_to_be_p_as_a =  Dir[File.join(".", '**', '*.c')]
files_to_be_p_as_a.size 
# => 43152
system("ls #{files_to_be_p_as_a}") 
# => nil
system("ls #{files_to_be_p_as_a[0..2273]}")
... # list of files
system("ls #{files_to_be_p_as_a[0..2274]}" 
# => nil
~~~

is there any limitation on Kernel system or is it something in my local environment? 




-- 
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