HOUSE OF DATA SCIENCE ON NATURE INFORMATION Coordinated

HOUSE OF DATA SCIENCE ON NATURE INFORMATION Coordinated by Thaned Rojsiraphisal Data Science Research Center, Department of Mathematics Faculty of Science, CMU Website: https: //sites. google. com/site/thanedcmu

SETTING. BASHRC (1) v File Ownership: d r w x r wx = d (r w x) (r wx ) v Private – Group -Others v v Bash environment: = Bourne again shell: v https: //www. youtube. com/watch? v=gi. Ab 4 Ckh 8 BQ v v /etc/bashrc (admin) or. bashrc (home directory) (or. bashrc_alias) Change Color / Word in prompt: v https: //www. youtube. com/watch? v=LXg. XV 7 Ym. Si. U&feature=youtu. be

BASIC UNIX COMMAND v “cat” (catenate = merging) : “cat * ” (merge everything) v “cat * | more” (show page by page) v “cat * | less ” (show short detail and ending with “: ” which is waiting for commands using in editors (vi) v “cat * | head -4” or “cat file | tail -6” v v “echo “welcome to the nature house” grep (-c) kkk file 1 (search “kkk” word in file 1 with –c for counting) grep [a-k]tin file 1 (search for word with a letter a, b, …k and ending with “tin”)

VI EDITOR v Cheat sheet: http: //www. atmos. albany. edu/daes/atmclasses/atm 3 50/vi_cheat_sheet. pdf v Create Files: “touch +filename” v “vi +filename v v Execution : chmod +x filename or chmod 755 filename v. /filename v

FIRST SCRIPT v https: //www. youtube. com/watch? v=g. Dah 72 w. Mj. Q 0 (ksh script) https: //linuxhint. com/30_bash_script_examples/ (bash script) v “vi my. Fscript” v #!/bin/bash clear echo “hello nature data” date echo “hello nature world – Today ‘s date is $( date +%D)” v v v Run with command “ksh my. Fscript” Or at the end Esc -> : ! Ksh (for running) or : ”w | !!” “vi my. File 1” (Automating run series of commands) #!/bin/bash echo “hello nature data” ls –l pwd ps | grep [a. A] echo “I am done”

CREATE SCRIPT 2 v https: //www. youtube. com/watch? v=9 h. Je 84 xv 8 XI v “vi script 2” #!/bin/bash echo “hello nature data” date +%D echo “hello nature world – Today ‘s date is $( date +%D)” Note: try v v v echo “hello nature world – Today ‘s date is $ date +%D” echo “hello nature world – Today ‘s date is $ [date]” echo “hello nature world – Today ‘s date is $ {date}”

CREATE SCRIPT 3 v https: //www. youtube. com/watch? v=9 h. Je 84 xv 8 XI v “vi script 3” (read input and show output) #!/bin/bash clear echo “hello nature data” read first. Name? ”what is your name ? ” (ksh command) read first. Name (bash command) echo “hello $first. Name – Nice to meet you”

UNIX COMMANDS (PASSWORD) Change your login password. v A very good idea after you got a new one. v Depending on a privilege, one can change user’s and group passwords as well as real name, login shell, etc. v % man passwd v Send email for your own account to: ผศ. ดร. จกรเมธ บตรกระจาง jakramate@gmail. com v

PRACTICE PLAN Unix command 1/2562 Access Data 2/2562 Manipulate and Analyze Data 2/2562 Programming 1/2562 Visualization 2/2562