HONR268N

HW IN SUBPAGES BELOW

09/10/2019: 

Commands from HW2: 

DIRECTORY STRUCTURE

-          Shows you the shell that you are using 

 Pwd – shows you the current directory

-          ls – lists the files on the computer

-          ls -l – from “ls --help” – “uses a long listing format”

-          ls -l -h – from “ls --help” – “prints in human-readable format”

o   only slightly different from ls -l : lists file size differently 

-          mkdir new_directory – make directory “new_directory”

-          cd .. – move back one directory

-          rmdir new_directory – remove directory (removed “new_directory”)

-          hitting up arrow – allows you to access previous commands without re-typing them

-          ls – CFx\usr\bin – lists directories

-          g++ - “GNU C++ compiler invocation command” (google), used for compiling/linking commands/source code

-          hitting tab after ls /home/cms adds the “-opendata” – fills in a previously used command

-          whoami – returns user name

-          echo  - displays lines of text/strings

-          ~ - references home directory

FILE OPERATIONS:

-          mkdir TEST – make directory “TEST”

-          cd TEST/ - change directory to TEST, hitting tab fills in the rest of the word

-          touch file1 file2 test1 test2 – creates four files, called file1, file2, test1, test2

-          find . -name “test*” – find any file beginning with “test”

-          find . -name “file*” – find any file beginning with “file”

-          find . -name “*1” – find any file ending with “1”

-          find . -name “*2” – find any file ending with “2”

-          rm file1 file2 test1 test2 – remove the four created files 

09/12/2019: 

HW2 code

EMACS:

cd ~/TEST -- moves to the directory named "TEST"

emacs -nw test.txt -- creates an emacs file called "test.txt" without opening a new window (-nw allows you to write the emacs file directly in the terminal)

above: creating an emacs document 

above: saving an emacs document 

cat test.txt - view content in file test.txt

more test.txt - view content in a file in a scrollable format (one page at a time, human-readable)