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From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Subject:	Re: How to handle length limit of PATH environment variable
Reply-To:	Brian DOT Inglis AT SystematicSw DOT ab DOT ca
To:	cygwin AT cygwin DOT com
References:	<ebd804f3-8e24-d96f-7ef4-0e1279afd929 AT gmail DOT com> <08077aa1-2da3-d381-8592-20c39acf063d AT abacus DOT ch>
Message-ID:	<fee71278-1680-d1fd-6ffd-e958e6664ba8@SystematicSw.ab.ca>
Date:	Thu, 5 Apr 2018 10:26:40 -0600
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On 2018-04-05 04:05, Wolf Geldmacher wrote:
> On 05.04.2018 11:19, Peter Bauer wrote:
>> i was bitten by the length limit of the PATH variable of 4095 characters (see
>> [1]) and could not find a way around it. This means i have a lot of software
>> packages in different directories and each of them adds itself to the PATH so
>> one can run the executables and have the shared libs available. Under Windows
>> there is the "short path workaround" but what to do under Cygwin?
>> Creating links with shorter names to the directories is not feasible since
>> there may be different users and different directories per user.
>>
>> Any ideas?

> On Unix (though not on cygwin) I've previously solved such issues by writing a
> script that collects symlinks to the contents of some list of directories in a
> few (system and/or user specific) directories. These few directories then take
> the place of the list.
> 
> The script will need to be re-run whenever there are changes to the directories
> on the list, but that can usually be automated.

Under Cygwin, I ln -rs custom local Cygwin scripts and exes in:
	/usr/local/bin/
added at the head of the Cygwin PATH,
and to keep them separate from Cygwin components, put custom local Windows user
scripts and exes in:
	/proc/cygdrive/c/usr/local/bin/
added after all Cygwin dirs in PATH, before other Windows dirs.
I keep Windows system specific scripts e.g. .cmd, .reg and exes requiring
elevation in:
	/proc/cygdrive/c/usr/local/sbin/
separate from the unprivileged components.
I add /usr/local/bin/ to the head of the cron PATH, and /home/.../bin/ to the
tail of the cron PATH, so everything used in cron jobs is there; I run
everything in Scheduled tasks from C:\usr\local\bin\ for similar reasons.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

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