Summary
Samenvatting Operating Systems-1
- Course
- Institution
Samenvatting van Operating Systems 1ste jaar met alle commands en theorie
[Show more]
Seller
Follow
emmabogaerts1
Content preview
Operating systems samenvattingInhoud
Inleiding..................................................................................................................................................3
Shell........................................................................................................................................................4
Tekstbestanden......................................................................................................................................9
Bestandsbeheer....................................................................................................................................15
Scripts – deel 1.....................................................................................................................................19
Herhaling..........................................................................................................................................19
Eenvoudige scripts............................................................................................................................20
Variabelen........................................................................................................................................22
Back quotes......................................................................................................................................25
Argumenten......................................................................................................................................26
Log files.............................................................................................................................................26
Scripts deel 2........................................................................................................................................27
Exit codes..........................................................................................................................................27
Condities...........................................................................................................................................28
Functies............................................................................................................................................32
Iteraties............................................................................................................................................33
Switch-case.......................................................................................................................................34
Gebruikers en permissies.....................................................................................................................35
Gebruikers en groepen.....................................................................................................................35
Permissies.........................................................................................................................................38
Proces- en pakketbeheer......................................................................................................................40
Pakketbeheer...................................................................................................................................40
Procesbeheer....................................................................................................................................42
Schijfbeheer..........................................................................................................................................44
Opslag en partities............................................................................................................................44
Koppelen van een file system...........................................................................................................46
Swap space.......................................................................................................................................47
Diskruimte........................................................................................................................................47
Aanvulling oefeningen..........................................................................................................................48
Week 9..............................................................................................................................................48
Week 11............................................................................................................................................49
11.2...............................................................................................................................................49
Pagina 1 van 50
,Pagina 2 van 50
,Inleiding
Operating systems
o = Linux
Bash command line (commando’s geven)
Bash scripting (automatiseren)
Gebruik je op servers,… Praktisch alles wat in de cloud zit
o Elke machine heeft een operating system nodig
Real-time OS = heel specifiek
Bv.: Windows, Mac, IOS, Andriod
o (word, browser, … communiceren allemaal met het operating system)
o UNIX
= één van de eerste OS, closed source (alleen de makers konden er aan
werken, andere mensen konden er niet dingen in aanpassen + was betalend)
Kleine programma gecombineerd <-> Windows is één groot bestand
Hierdoor minder kans op bugs
Programma’s werken met tekstbestanden (ASCII of unicode) als input-output
UNIX kernel
Taken
o Hardware aansturen (muis, scherm, …)
o Booting / opstarten
o Bestandsbeheer
Harde schijf > (opgedeeld in) partities > blokken data
o Procesbeheer
Beheert meerdere applicaties tegelijkertijd
o Geheugenbeheer
o …
Zonder kernel moet iedere applicatie dit allemaal zelf doen
Multi-user (gebruikers kunnen tegelijkertijd op één systeem, via
terminals
Interactie met gebruiker via terminal (tekst) of X-terminal (grafisch)
Multitasking
“Processor onafhankelijk”: grotendeels geschreven in C
Geschiedenis
o 1965: UNIX, C (closed source door Ken Thompson en Dennis Richie)
o 1985 – 1989: Open source, GNU (Richard Stallman)
GNU is Not Unix (open sourcebeweging)
GPL (= Gnu Public Licence)
Free speech <-> free beer (GNU hoeft niet persé gratis te zijn)
LibreOffice, Firefox, Wikipedia, …
o 1987: Minix (Andrew S. Tanenbaum)
o 1991: Linux kernel: Linus Torvalds
Kernel = stuk van een operating system
Pagina 3 van 50
, Schema operating system:
Open source
o Software (LibreOffice, Audacity,…)
o Boeken (vb. Boek linux, cursus hardware)
o Processoren (vb. MIPS, Sun Sparc, Moncky, …)
o Hardware (Thingiverse) -> gebruikt om voorwerpen 3D te printen
o Auto’s (wikispeed,…)
o …
o Veel versies
Veel distributies van GNU/Linux
Debian based (ubuntu)
Redhat based (Fedora)
Oracle
…
Shell
Command prompt (= command line)
o In Windows:
“DOS” prompt (= tekstgebaseerde gebruikersinterface, Disk Operating
System)
“cmd” (= command) of “powershell”
Windows subsystem for Linux (WSL)
o MAC OSX
“terminal
o Secure shell
Server in de cloud Meestal
Geen user interface
Secure shell gebruiken om verbinding te maken
Pagina 4 van 50
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller emmabogaerts1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.03. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
52510 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now