This day of class new room same old cooling/heating problem. A new semester has pose a new set of challenges and trials to over come and understand and expand my knowledge. Refreshing my unix/linux and feeling like I'm starting from scratch I started to look around in linux and found that i have forgotten much of what I use to take as “old hat” is now almost as new to me as many people now taking i have found myself once again in the lair being clueless coming in and trying to keep up.

ls -list all directories or files man - manual for specified file/function

2nd day of Oops and its hot inside and out and Joe is in good humor like always and is surprisingly on topic for the most part. will be posting 3 files and a wiki update on lab46 opus and bit bucket for bit bucket use from command line internet cert fix and a script for ssh link to bit bucket so you don't have to type in the entire lines to add, commit, push, pull and update.

Ordered List Item irc chat

1. initialization of irc
   1. screen -ls see if you have any screen running
   2. screen to open the application
   3. irssi to start irc system
   4. /server to join irc
   5. /join “name of channel” to join the irc chat area
   6. to disconnect from a screen is ctrl-a d
2. resume a irc screen
   1. screen -r
   2. ctrl-a d

17 simple steps to making and using your repository from lab46

1. mv src src.bak 2. mkdir src 3. hg clone http://www/hg/user/“yourusername” ~/src 4. to clone remotely such as on home computer or laptop hg clone http://www/hg/user/“yourusername” ~/src 5. cd src 6. mv ~/src.bak/* ~/src 7. rmdir ~/src.bak 8. vi or nano .hg/hgrc 9.*[paths]

• defualt=http://www/hg/user/youtusername/
• [web]
• push_ssl = false
• allow_push =*
• [ui]
• username = firstname lastname yourusername@lab46.corning-cc.edu
• [auth]
• lab46.prefix = http://www/hg/user/yourusername
• lab46.username = yourusername
• lab46.username = http

10.save and exit 11.nano or vi .hgignore

• syntax: glob
• *.swp
• *.pyc
• *.o
• ~

12. hg status 13. hg add 14. hg commit -m “your add and commit comment” 15. hg push 16. hg pull 17. hg update

finally fixed my mercurial problem on my flash drive and cloned my repository to my lap top and going to do that as well on lab46 errors I received and how i fixed them.

• Q1: Error path to specified file not found
• A1: Had to re-clone my repository from bit bucket i forgot capital letters first time
• Q2: specified file not found
• A2: this was partially solved with the first resolution but needed to copy and paste the file to the new repository
• Q3: cannot find program in specified path
• A3: the path was leading to the C directory first time and the second time it was ending up at the wrong program forgot the exe on the end of hg

Remembering 9/11/01 is one of the oddest things of my life. I was in class and had no idea that the trade centers were hit by 2 large commercial airliners and had no idea what happened until after school. in honor of that day i am once again in class focusing on studies and writing my opus for linux/unix class.

• ls: look in side a directory (see man ls for more info)
• cd: change directory back of forth depending on arguments given to cd (see man cd for more info)
• mv: move one file or directory from one spot to another (man mv for more info)
• mkdir: make a directory (see man mk for more info)
• rm: remove /delete a file or directory from existence (man rm for more info)
• cp: copy file form one spot to another making 2 copies (man cp for more info)
• vi: open a visual text editor for plain txt files used for most programing and as for me notes (man vi for more info)
• cat: display contents of a file or directory (man cat for info)
• tail: display last 10 lines of a file or directory (man tail for well you know)
• head: display first 10 lines of a file or directory (man top for more)
• chmod: change the read wright and execute permissions of a file or directory (ditto)
• top: display processes in real time(seeing a pattern emerging)
• cal: displays a calendar (and more)
• date: displays today date (man date for any info for date)
• pom: displays the phase of the moon(yes the moon don judge)
• status: displays currently attendance and assignments done (no man here its a script from matt)
• man: short for manual used for documentation usually followed my a argument asking for the manual of the document (man man for more info |testing mans' limits|)

October 16, 2014

 
 This will post will be everything I have done in both OOPS and Unix/Linux fundamentals
 

unix notes September 2, 2014 19 simple steps to making and using your repository from lab46

1. mv src src.bak 2. mkdir src 3. hg clone http://www/hg/user/yourusername `/src 4. to clone remotely such as on a home computer or laptop

   hg clone http://lab46.corning-cc.edu/hg/user/yourusername ~/src

5. cd src 6. mv ~/src.bak/* ~/src/ 7. rmdir ~/src.bak 8. vi or nano .hg/hgrc 9. [paths]

   default = http://www/hg/user/yourusername
   [web]
   push_ssl = False
   allow_push =*
   [ui]
   username = Fristname Lastname <yourusername@lab46.corning-cc.edu>
   [auth]
   lab46.prefix = http://www/hg/user/youtusername
   lab46.username = yourusername
   lab46.username = http

10. save and exit 11. nano or vi .hgignore 12. syntax: glob

• .swp
• .pyc
• .o
• ~

13. hg status 14. hg add 15. hg status 16. hg commit -m “your add and commit comment” 17. hg push 18. hg pull 19. hg update unix notes 09/04/2014

cd= change directory

unix command line seqeunce

                               /=top
-----------------------------------------------------------------
|       |       |       |       |       |       |       |       |
                               home                            mnt
                               |                               |
                           ---user----                     ---------
                           |    |    |                     |   |   |
                           src  bin  other                flash ect.ect.
                                                            |
                                                        ---------
                                                        |       |
                                                        mp3     pictures

pwd=path listing relative path: only work for you Absolute path: works for everyone ls -l long list wil show read write permissions cat: posts it contents of a file to the terminal echo: simple print statement

     stdin: defualt input
     stdout: defualt output
     stderr: defualt output for errors
  >: redirects stdout to file (writes)
 >>: redirects stdout to file (appeneds)
 2>: redirects stderr to file (writes)
2>>: redirects stderr to file (appeneds)

tail: lists last 10 lines (-f tells tail to not exit file when done keep posting) /dev/null: nullifies things sent there

see opus for comand list

9/11/14 project

back to mastering lazy

cd /var/public/unix/project/archive_handling lossy: non data safe after save and use jpeg is a lossy digital format losses quality after copy and moving lossless: smaller compresion but more data is saved

.tar.bz2 compresion .zip use the man pages

1. figure out teh format 2. figure out how to extract 3. find empty or corruptfiles 4. organizer smallest small big and biggest 5. myarchive.tar 6. use -n argument 7. use submit myarchive.tar.gz

September 11, 2014 notes

ed line editor early text editor

Bill Joy: came up with an idea for a text editor -insert

1. commands

 
       aka visual editor aka vi

       Commands
       --------
               i: insert
               h: left by character
               j: down by character
               l: right by character
               k: up by character
  number+command: takes you that many in the direction
               w: foward by word
               b: backward by word                 
               W: forward by spaces
               B: backward by spaces
               $: end of line
               ^: start of line
        number+G: moves to the line
              <<: indent
              >>: unindent                 
               x: delete
               X: backspace
              dw: delete by word
              db:
              dW:
              dB:
              d^:
              d$:
              dd:
               p: paste above cursor
               P: paste below cursor
               s: substitute
              cw: change word
              cb:
              cW:
              cB:
              C^: change by line start
              C$: change by line end
               y: yank out a word (aka copy)
              yy: yank by line
              yb:
              yB:
              yw:
              YW:
               u: undo
               U:
               /: search
               n: next forward
               N: next backward
             :wq: write and quit
     :w filename: saves a file by filename
              :q: quit
             :q!: quit without saving

       insert
      ------
               i: insert where you last left off
               a: inserts after current character
               I: insert at start of line
               A: insert at ending of line
               o: open a new line below
               O: open a new line above

September 18 2014

       text processing
               vi= best text editor ever
               cat= display content of a file
               ctrl+s = xoff
               ctrl+q = xon
               od= octal dump
                       -x: hex dump
               endianness
                       little endian : lower order
                       big endian    : high order
               grep: global regular expression print
                       \<\>
                       -i: case insenseitive
                       -o: only matchinng no line
                       |: out of left to input to the right
               wc= word count
                       -l: length

September 23 2014

      |=pipe : output | input
       head: defualt display frist 10 lines
       tail: defualt display last 10 linescd
       for who.dat
       section 1 head -19 who.dat>section1
       section 2 head -38 who.dat| tail-19 >section2
       section 2x1 tail -19 section4>section2x1
       section 3 tail -19 who.dat>section3
       section 4 head -38 who.dat>section4

      cat section2 section1 section3 >who.all
       who.all orginized

       cat section2 section1 section3|sort|less

       sort: sorts by name of file and if linked to cat siplays in order
       bc: base calculator
       groups: list groups u are attatched to

september 25 2014

      vogue.co.uk up,up,down,down,left,right,left,right,b,a,a,a,a,a,a,

       Dinosuars with hats

       qoutes         '-fullqoute, literal qoute
      "-half qoute, allow for expansion(varible)
      `-backtick,command expansion

       cut - cuts lines and prints them out

       making cmdline varibles

       ; seperate commands on a single line
       sleep wait for so many seconds

October 3, 2014

       wildcards
       ---------
       ?- matches any single character
       []-character class, match any of the enclosed characters(just one)
       *-matches zero or more of any character
       [^]- inverted character class, do not match any of the enclosed

       logic operations
       ----------------
       |-or operand

       egerp
       -----
       ''-match anything inside the qoutes

October 7, 2014

      a process is a program in action (is a running programing)
       PID max pid is 2^16=65536
                       starts at 1 reserved for init

      ps = list of running process

       kill = signal and system call ends processes: kill -# "PID"
       top= currently running process

october 9, 2014

      ls list files in directors
      -a to ls list hidden files

      alias lists the preset
      alias can also set names for commands
      unalias can undo aliases

       PS1 sets command line prompt
      wall send a message to users

      PATH set or change paths

      #! - sh-bang
      tab - partial start a command and its arguments and pressing tab will attempt to complete
      bash syntex
              -gt greater then
              -ge greater then or equal to
              -lt less then
              -le less then or equal to
              -ne not equal to
              -eq equal to

October 10, 2014

largest mv i ever used

mv 2darry.c Rockpapersissors.c StatementsSano.c Task4.o array.c array.o array2.c binary.c binary2.c clab.c clab.o cprogtask1 cprogtask2 cprogtask3 cprogtask4 cprogtask4 cprogtask5 cprogtask6 cprogtask7 crpogtask8 cprogtask9 cprogtask A floatapp.c functions.c fwg.c gfxfun.c hello.c hello.o ifselect.c looparry.c nocapes.c notes numberfun7.c numberfun7.o rand.c rand.o shovelingbob sqaures.c srandtime.c taskx.c var1.c var1.o vbs Programs

october 23, 2014

#!/bin/bash total=0 evens=0 for number in `cat data`;do evenchk=`echo “$number%2”|bc` if [ “$evenchk” -eq 0 ]; then let evers=$evens+1 fi let total =$total+1 done echo “out of $total numbers, there are $evens even numbers” exit 0 using bash to pull data out of status for current grades

November 4, 2014

  1 #include<stdio.h>
  2 #include<stdlib.h>
  3 
  4 class rectangle
  5 {
  6         public:
  7                 int area();     
  8                 int perimeter();
  9                 rectangle(); 
 10                 rectangle(int,int);
 11 
 12         private:
 13                 int length;
 14                 int width;
 15 };
 16 int rectangle::area()
 17 {
 18         return((length*width));
 19 }
 20 int rectangle::perimeter()
 21 {
 22         return((length+length+width+width));
 23 }
 24 rectangle::rectangle()
 25 {
 26         width=0;
 27         length=0;
 28 }
 29 rectangle::rectangle(int length, int width)
 30 {
 31         this->length=length;
 32         this->width=width;
 33 }
 34 int main()
 35 {
 36         int area=0;
 37         int perimeter=0;
 38         rectangle rect1;
 39         rectangle *rect2;
 40         rect2=new rectangle(4,10);
 41         area=rect1.area();
 42         perimeter=rect1.perimeter();
 43         printf("rect1 area is: %d\n", area);
 44         printf("rect1 parimeter: %d\n", perimeter);
 45         area=rect2->area();
 46         perimeter=rect2->perimeter();
 47         printf("rect2 area is: %d\n", area);
 48         printf("rect2 parimeter: %d\n", perimeter);
 49         return(0);
 50 }