G4G0-1/Semester 1/Computer Systems Internals & Linux/Week 1/Week 1 Computer Systems Internals.md

Lecture 1 (12.00)

• People use base10 because they have 10 fingers
• Computers use base2 because they have 1 finger

Lecture 2 (15.00)

Binary Denary Conversion

Convert to Binary

• 9 = 00001001
• 45 = 00101101
• 171 = 10101011
• 238 = 11101110

Convert to Denary

• 00010001 = 17
• 00110101 = 53
• 10011010 = 154
• 10110111 = 183

Basic Linux Commands

• ls (list)
• cd (navigate directory)
• ~ - home directory
• / (root system directory)
• rmdir (remove directory)
• mkdir (make directory)
• cp (copy)
• mv (move)
• rm (remove)
• pwd (print working directory)

vi (visual editor)

• not hype, use for assessments only

nano (fork Of Pico editor)

• hype, use everywhere outside of assessments

Workshop 1 (11:00)

boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ vi vi-file.txt 
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ cat vi-file.txt 
This is a file created with Vi / ViM
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ nano nano-file.txt
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ cp vi-file.txt copy-of-vi.txt
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ cp -i nano-file.txt copy-of-vi.txt 
cp: overwrite 'copy-of-vi.txt'? no
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ mv copy-of-vi.txt renamed-file.txt
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ rm -i renamed-file.txt 
rm: remove regular file 'renamed-file.txt'? y
boris@george-thinkpad:~/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1$ pwd
/home/boris/OneDrive/Computer Science Year 1/Computer Systems Internals & Linux/Week 1