UnixTools02

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Revision as of 10:54, 13 December 2024 by Jpr (talk | contribs) (→‎File Formats)
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File Formats

Für das Betriebssystem sind Dateien nur eine Folge von Bytes.

Manchmal sind die darin gespeicherten Daten nur dem Programm verständlich, dass die Dateien geschrieben (erzeugt) hat. Immer öfter verwenden Programme jedoch auch Formate, deren grundsätzlicher Aufbau bekannt ist. HIer einige typische Beispiele.

Markdown (von wikimedia)

== Header name ==
=== Header name ===
italic text
bold text
* list item
# numbered list item


Yaml - Yet Another Markup Language

Example: docker config

services:
 nextcloud:
   image: nextcloud
   container_name: nextcloud
   restart: unless-stopped
   networks: 
     - cloud
   depends_on:
     - nextclouddb
     - redis
   ports:
     - 8081:80
   volumes:
     - ./html:/var/www/html
     - ./custom_apps:/var/www/html/custom_apps
     - ./config:/var/www/html/config
     - ./data:/var/www/html/data
   environment:
     - PUID=1000
 
 nextclouddb:
   image: mariadb
   container_name: nextcloud-db
   restart: unless-stopped
   command: --transaction-isolation=READ-COMMITTED --binlog-format=ROW
   networks: 
     - cloud
   volumes:
     - ./nextclouddb:/var/lib/mysql


XML - Extensible Markup Language

<?xml version="1.0"?>
<CAT>
  <NAME>Izzy</NAME>
  <BREED>Siamese</BREED>
  <AGE>6</AGE>
  <ALTERED>yes</ALTERED>
  <DECLAWED>no</DECLAWED>
  <LICENSE>Izz138bod</LICENSE>
  <OWNER>Colin Wilcox</OWNER>
</CAT>


HTML - Hyper Text Markup Language

<!DOCTYPE html>
<html>
<body>
some text
</body>
</html>


csv - Comma-Separated Values

Stunde,Montag,Dienstag,Mittwoch,Donnerstag,Freitag
1,Mathematik,Deutsch,Englisch,Erdkunde,Politik
2,Sport,Deutsch,Englisch,Sport,Geschichte
3,Sport,"Religion (ev., kath.)",Kunst,,Kunst


json - Java Script Object Notation

'{"name":"John", "age":30, "car":null}'


Log file

Example: /var/log/dpkg.log

2024-12-12 06:49:17 status unpacked intel-microcode:amd64 3.20241112.0ubuntu0.22.04.1
2024-12-12 06:49:17 startup packages configure
2024-12-12 06:49:17 configure intel-microcode:amd64 3.20241112.0ubuntu0.22.04.1 <none>
2024-12-12 06:49:17 status unpacked intel-microcode:amd64 3.20241112.0ubuntu0.22.04.1
2024-12-12 06:49:17 status half-configured intel-microcode:amd64 3.20241112.0ubuntu0.22.04.1
2024-12-12 06:49:17 status installed intel-microcode:amd64 3.20241112.0ubuntu0.22.04.1
2024-12-12 06:49:17 status triggers-pending initramfs-tools:all 0.140ubuntu13.4
2024-12-12 06:49:17 trigproc initramfs-tools:all 0.140ubuntu13.4 <none>
2024-12-12 06:49:17 status half-configured initramfs-tools:all 0.140ubuntu13.4
2024-12-12 06:49:33 status installed initramfs-tools:all 0.140ubuntu13.4


typical programming languages

  • C, C++
  • python
  • Java
  • JavaScript
  • bash (script)
  • SQL
    • e.g. .bashrc (bash script)
    • logfile /var/log/dmsg.log

Tools

  • unix program file
  • Editor with language support