Troubleshooting
A log of the image update is written to /setup/eluxman/*.log.
Scripts executed before/during/after installation
The .preInst, .postInst, .preUninst and .postUninst hook scripts are a bit special and need extra care to work properly. The most important things first:
-
you might not see (all) output from your scripts in the eluxman.log, so please take extra care to verify the results and don’t rely on “I don’t see any errors so it works”
-
currently you can expect any shell options (e.g. set -o errexit ) to propagate to all other scripts executed, so don’t use them or unset anything you set on exit
-
it’s harder to properly use set -o errexit : you need to use set -o errexit,errtrace and can then use a trap to remove those flags on quit
-
(the propagation of all shell options only happens with the terminal.ini parameter Development=true, but you can’t rely on that not being set)
-
depending on when in the overall install process your script is executed, don’t expect the system to be fully functional: e.g. a script for minsystem cannot expect any applications or libraries from any other FPM to be present
Determining final installation state
If you want to perform certain actions only if a package gets uninstalled and not reinstalled you can check the first argument $1 in any of the post/pre Inst/Uninst scripts: It contains the number of packages that will be left on the system when the action completes, so for example if a package is uninstalled $1 will be 0 in the preUninst and postUninst scripts. If the package is up- or downgraded it will be first uninstalled and then reinstalled, so $1 should be != 0 in all scripts. Since there can be cases where $1 is 2, you should always check unequality to 0 and not equality to 1.
Special #include
There is a special feature to include scripts in your scripts
#include <path/to/somescript>
and epkg will replace the line with the script that is specified there. This works like the C Preprocessor.
This feature works only in .preInst, .postInst, .preUninst and .postUninst hook scripts, but is not usable for .preCommands and .postCommands hook scripts.
The official version of this content is in English. Some of the Cloud Software Group documentation content is machine translated for your convenience only. Cloud Software Group has no control over machine-translated content, which may contain errors, inaccuracies or unsuitable language. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, suitability, or correctness of any translations made from the English original into any other language, or that your Cloud Software Group product or service conforms to any machine translated content, and any warranty provided under the applicable end user license agreement or terms of service, or any other agreement with Cloud Software Group, that the product or service conforms with any documentation shall not apply to the extent that such documentation has been machine translated. Cloud Software Group will not be held responsible for any damage or issues that may arise from using machine-translated content.
DIESER DIENST KANN ÜBERSETZUNGEN ENTHALTEN, DIE VON GOOGLE BEREITGESTELLT WERDEN. GOOGLE LEHNT JEDE AUSDRÜCKLICHE ODER STILLSCHWEIGENDE GEWÄHRLEISTUNG IN BEZUG AUF DIE ÜBERSETZUNGEN AB, EINSCHLIESSLICH JEGLICHER GEWÄHRLEISTUNG DER GENAUIGKEIT, ZUVERLÄSSIGKEIT UND JEGLICHER STILLSCHWEIGENDEN GEWÄHRLEISTUNG DER MARKTGÄNGIGKEIT, DER EIGNUNG FÜR EINEN BESTIMMTEN ZWECK UND DER NICHTVERLETZUNG VON RECHTEN DRITTER.
CE SERVICE PEUT CONTENIR DES TRADUCTIONS FOURNIES PAR GOOGLE. GOOGLE EXCLUT TOUTE GARANTIE RELATIVE AUX TRADUCTIONS, EXPRESSE OU IMPLICITE, Y COMPRIS TOUTE GARANTIE D'EXACTITUDE, DE FIABILITÉ ET TOUTE GARANTIE IMPLICITE DE QUALITÉ MARCHANDE, D'ADÉQUATION À UN USAGE PARTICULIER ET D'ABSENCE DE CONTREFAÇON.
ESTE SERVICIO PUEDE CONTENER TRADUCCIONES CON TECNOLOGÍA DE GOOGLE. GOOGLE RENUNCIA A TODAS LAS GARANTÍAS RELACIONADAS CON LAS TRADUCCIONES, TANTO IMPLÍCITAS COMO EXPLÍCITAS, INCLUIDAS LAS GARANTÍAS DE EXACTITUD, FIABILIDAD Y OTRAS GARANTÍAS IMPLÍCITAS DE COMERCIABILIDAD, IDONEIDAD PARA UN FIN EN PARTICULAR Y AUSENCIA DE INFRACCIÓN DE DERECHOS.
本服务可能包含由 Google 提供技术支持的翻译。Google 对这些翻译内容不做任何明示或暗示的保证，包括对准确性、可靠性的任何保证以及对适销性、特定用途的适用性和非侵权性的任何暗示保证。
このサービスには、Google が提供する翻訳が含まれている可能性があります。Google は翻訳について、明示的か黙示的かを問わず、精度と信頼性に関するあらゆる保証、および商品性、特定目的への適合性、第三者の権利を侵害しないことに関するあらゆる黙示的保証を含め、一切保証しません。
ESTE SERVIÇO PODE CONTER TRADUÇÕES FORNECIDAS PELO GOOGLE. O GOOGLE SE EXIME DE TODAS AS GARANTIAS RELACIONADAS COM AS TRADUÇÕES, EXPRESSAS OU IMPLÍCITAS, INCLUINDO QUALQUER GARANTIA DE PRECISÃO, CONFIABILIDADE E QUALQUER GARANTIA IMPLÍCITA DE COMERCIALIZAÇÃO, ADEQUAÇÃO A UM PROPÓSITO ESPECÍFICO E NÃO INFRAÇÃO.