Re: RegExps in AS
Re: RegExps in AS
- Subject: Re: RegExps in AS
- From: Christopher Nebel <email@hidden>
- Date: Tue, 22 Feb 2005 15:06:28 -0500
On Feb 21, 2005, at 7:23 PM, Andrew Oliver wrote:
Q: How long can my command be, really?
A: Calling do shell script creates a new sh process, and is
therefore subject
to the system's normal limits on passing data to new processes: the
arguments
(in this case, the text of your command plus about 40 bytes of
overhead) and
any environment variables may not be larger than NCARGS, which is
currently
65,536 bytes.
64K is a pretty meaty command line.
That part of the note is out of date -- it's actually even meatier than
that. (Well, may be, depending on your OS version.) To get the answer
for your system, say 'do shell script "sysctl kern.argmax"' -- in
Panther, you'll get 262144, or 256K.
--Chris Nebel
AppleScript Engineering
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