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--- sermn_wiki:userpages:marta:reserves_automatiques_manteniment_2022 [2022/08/19 17:16]
miquel [Seguretat]
+++ sermn_wiki:userpages:marta:reserves_automatiques_manteniment_2022 [2022/08/23 19:57] (current)
miquel [Dateutils]
@@ Line 7: / Line 7: @@
 **IMPORTANT:** Les reserves per les estones de manteniment es crearan automàticament amb vuit setmanes d'antelació, per tal que, si s'escau, hi hagi prou temps per modificar-les.
+===== Instal·lar el paquet "dateutils" =====
-===== maintenance_bookings.sh =====
+Instal·lo el paquet ''dateutils'' per facilitar el càlcul amb dates:
+<file>
+$ sudo apt install dateutils
+[sudo] password for sermnadmin: ******
+Reading package lists... Done
+Building dependency tree
+Reading state information... Done
+The following NEW packages will be installed:
+  dateutils
+upgraded, 1 newly installed, 0 to remove and 15 not upgraded.
+Need to get 217 kB of archives.
+After this operation, 1,555 kB of additional disk space will be used.
+Get:1 http://ftp.es.debian.org/debian buster/main amd64 dateutils amd64 0.4.3-1 [217 kB]
+Fetched 217 kB in 0s (586 kB/s)
+Selecting previously unselected package dateutils.
+(Reading database ... 253630 files and directories currently installed.)
+Preparing to unpack .../dateutils_0.4.3-1_amd64.deb ...
+Unpacking dateutils (0.4.3-1) ...
+Setting up dateutils (0.4.3-1) ...
+Processing triggers for install-info (6.5.0.dfsg.1-4+b1) ...
+Processing triggers for man-db (2.8.5-2) ...
+</file>
+===== maintenance_bookings_2022.sh =====
 <WRAP todo>
@@ Line 16: / Line 42: @@
 Aquest es el programet que crea les reserves per l'estona de manteniment. S'executa tots els diumenges a les 3 de la matinada, i crea les reserves amb dues setmanes d'antelació per tal que es puguin modificar si s'escau. El programet també envia un correu electrònic indicant si ha pogut fer les reserves.
-<code bash maintenance_bookings.sh>
+<code bash maintenance_bookings_2022.sh>
 #!/bin/bash
 #
-# maintenance_bookings.sh
+# maintenance_bookings_2022.sh
 #
 # (c) 2013, Miquel Cabanas, SeRMN, UAB
@@ Line 212: / Line 238: @@
 <WRAP todo>
-FIXME comprovar.
+FIXME cal comprovar els permisos.
 </WRAP>
@@ Line 226: / Line 252: @@
 deny from all
 </file>
+===== Documentació =====
+==== BASH date math ====
+  * [[https://www.linuxjournal.com/content/doing-date-math-command-line-part-i | Doing Date Math on the Command Line, Part I | Linux Journal.]]
+    * [[https://www.linuxjournal.com/content/doing-date-math-command-line-part-ii | Doing Date Math on the Command Line, Part II | Linux Journal.]]
+  * [[https://linuxconfig.org/addition-and-subtraction-arithmetics-with-linux-date-command | Addition and subtraction arithmetics with Linux date command - Linux Tutorials - Learn Linux Configuration.]]
+  * [[https://www.shell-tips.com/bash/math-arithmetic-calculation/#gsc.tab=0 | Math Arithmetic: How To Do Calculation in Bash?]]
+  * [[https://www.google.com/search?client=firefox-b-e&q=bash+date+arithmetic | bash date arithmetic - Cerca de Google.]]
+==== BASH modulus operator ====
+  * [[https://linuxhint.com/modulus-bash/ | How to Use Modulus in Bash?]]
+  * [[https://tldp.org/LDP/abs/html/ops.html | 8.1. Operators,]] in Chapter 8. Operations and Related Topics. //Advanced Bash-Scripting Guide. An in-depth exploration of the art of shell scripting.// Mendel Cooper, 2014.
+==== Debugging BASH ====
+  * [[https://www.baeldung.com/linux/debug-bash-script | Debugging a Bash Script.]]
+  * [[https://www.shell-tips.com/bash/debug-script/ | 5 Simple Steps On How To Debug a Bash Shell Script.]]
+  * [[https://tldp.org/LDP/abs/html/debugging.html | Chapter 32. Debugging.]] //Advanced Bash-Scripting Guide. An in-depth exploration of the art of shell scripting.// Mendel Cooper, 2014.
+  * [[https://www.shellcheck.net/ | ShellCheck – shell script analysis tool.]]
+    * [[https://github.com/koalaman/shellcheck | GitHub - koalaman/shellcheck: ShellCheck, a static analysis tool for shell scripts.]]
+  * [[https://google.github.io/styleguide/shellguide.html | Google Shell Style Guide.]] Revision 2.02. Authored, revised and maintained by many Googlers.
+    * [[https://unix.stackexchange.com/questions/449498/call-function-declared-below | call function declared below.]] :info: check recommnendations about ''main "$@"; exit'' and ''<nowiki>[[ ${BASH_SOURCE[0]} = "$0" ]]</nowiki> && Main "$@"''.
+==== Dateutils ====
+  * [[http://www.fresse.org/dateutils/ | Dateutils]] are a bunch of tools that revolve around fiddling with dates and times in the command line with a strong focus on use cases that arise when dealing with large amounts of financial data.
+    * [[https://github.com/hroptatyr/dateutils | GitHub - hroptatyr/dateutils:]] nifty command line date and time utilities; fast date calculations and conversion in the shell.
+  * [[https://packages.debian.org/search?searchon=names&keywords=dateutils | Debian -- Package Search Results -- dateutils.]]
+==== Cron ====
+  * [[https://en.wikipedia.org/wiki/Cron#CRON_expression | cron - Wikipedia.]]
+  * [[https://crontab.guru/#20,50_7-13_*_*_* | Crontab.guru - The cron schedule expression editor.]]
+  * [[https://unix.stackexchange.com/questions/210739/getting-crontab-events-that-would-happen-given-a-start-date-time
+  * cron | Getting crontab events that would happen given a start date/time - Unix & Linux Stack Exchange.]]

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