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

[Rainer M Krug]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1



On 12/10/13, 16:59 , Nick Dokos wrote:
> Rainer M Krug <address@hidden> writes:
> 
>> Hi
>> 
>> I have a question concerning a bash script to update org (and ess
>> in the same way but in a different script).
>> 
>> The script I use to update org looks as follow:
>> 
>> #!/bin/sh cd ~/.emacs.d/org-git
>> 
>> #### #!/bin/sh git checkout master make update ####
>> 
>> which works nicely, but I would like to only execute the "make
>> update" if git updated something - I am sure this is possible,
>> but how?
>> 
> 
> It seems to me that the dependencies are not dealt with correctly
> in the Makefile, so after the git pull (whether that did anything
> or not), ``make update'' rebuilds everything. Ideally, it should
> figure out what needs rebuilding and just do that - then you
> wouldn't need anything more. OTOH, CPU cycles are cheap and
> rebuilding everything only takes 12 seconds on my laptop, so should
> we really care?

Well - you are right. Why care?

> 
> 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.

Cheers,

Rainer

> 
> 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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iQEcBAEBAgAGBQJSp17xAAoJENvXNx4PUvmCxYcH/j0n2ap3F7KhWV0BvPBvy1dz
Y3A4RIryZcodwftJdjsulo7bJk465kkWDliojxrLBlRPqdcPLMrT2ZRVFU8T3Bbx
RomZoB3fFntUGQ4OvtsmbGvCZ/mBYFY2ejuMmnxGxtYlgjYatrRdVvviuNTGPIzj
IivWcUXN9k8JJ743NhMHthhQJP/9l6IImhsKysnKNhBHjlQuHiYYmQSipVYoO5ot
pNcE3i8iqlpTzkn2K2LF5wjp5VduvBRCAYyessszsA7CrA4mlC+HNTamF6pG+jZS
2zSsA2l4oTCVtPdnJdp1KnLCb3uqET5YHKL+5OIXxHvsOUbILh6HLIXDAc2g9rg=
=Msa4
-----END PGP SIGNATURE-----