Shell - argv limits

JB sundown at pacifier.com
Wed Jun 28 20:18:13 EDT 2017


I am guessing the is a pretty large number.

JB


> On Jun 28, 2017, at 4:45 PM, Mark Wieder via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> On 06/28/2017 04:06 PM, JB via use-livecode wrote:
>> When using argv it has a character limit.  I think it
>> might be different on different systems but you can
>> probably use a few thousand characters for each
>> argument.  You can have as many arguments as
>> memory can handle.  Probably thousands.  You
>> should refer to a file for larger data.
> 
> It does indeed depend on the OS, but I think the maximum length is for the total command line, not for individual arguments. At any rate, for my linux mint system I see an ARG_MAX value of 2097152.
> 
> https://stackoverflow.com/questions/6846263/maximum-length-of-command-line-argument-that-can-be-passed-to-sqlplus-from-lin
> 
> Note that there is also a limit to the number of arguments that can be passed on a commandline, and as a rule of thumb it is *probably* ARG_MAX/4-1, but if this is something that concerns you, you no doubt have other things to worry about <g>.
> 
> -- 
> Mark Wieder
> ahsoftware at gmail.com
> 
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