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Re: [O] Bash script to update - only make when update there?


From: Rainer M Krug
Subject: Re: [O] Bash script to update - only make when update there?
Date: Tue, 10 Dec 2013 20:37:42 +0100
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.1.1

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On 12/10/13, 20:31 , Nick Dokos wrote:
> Rainer M Krug <address@hidden> writes:
> 
>> On 12/10/13, 16:59 , Nick Dokos wrote:
>>> ... Be that as it may, you can try something like this hack
>>> (those are backticks around the git pull - it's under the ESC
>>> key in the upper left hand corner on most US keyboards but it
>>> may be somewhere else on yours):
>>> 
>>> if [ "`git pull`" == "Already up-to-date" ] then echo "Up to
>>> date" else make update fi
>> 
>> True - but if git pull does change the message, I have to change
>> it as well - I just leave it as it is.
>> 
> 
> Here for your amusement is a way to get around this problem:
> 
> if [ "`git pull`" == "`git pull`" ] then echo Up to date else make
> update fi
> 
> You pay double the cost every time you use it but if they ever
> *do* change the message, it's not going to break. But of course, if
> the shell ever optimizes the second git pull away, you are back at
> square one...

I like it - optimization which not necessarily is faster....

Cheers,

Rainer


> 
> With-tongue-firmly-in-cheek-ly yours, Nick
> 
> 
> 
> 
> 

- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax :       +33 - (0)9 58 10 27 44

Fax (D):    +49 - (0)3 21 21 25 22 44

email:      address@hidden

Skype:      RMkrug
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