Designer | Yu-Hui Ma
Department | Tamkang University(淡江大學) / Information Management_2C(資訊管理學系)
Subject | Linux File System Format Introduction(Linux 檔案系統格式介紹)
Designer | Yu-Hui Ma
Department | Tamkang University(淡江大學) / Information Management_2C(資訊管理學系)
Subject | Linux File System Format Introduction(Linux 檔案系統格式介紹)
Invent the Future (Operating Systems in 2029)David Evans
University of Virginia
cs4414: Operating Systems
http://rust-class.org
For embedded notes, see:
http://rust-class.org/class-23-invent-the-future.html
"Even so, mankind will suffer badly from the disease of boredom, a disease spreading more widely each year and growing in intensity. This will have serious mental, emotional and sociological consequences, and I dare say that psychiatry will be far and away the most important medical specialty in 2014. The lucky few who can be involved in creative work of any sort will be the true elite of mankind, for they alone will do more than serve a machine.
Indeed, the most somber speculation I can make about A.D. 2014 is that in a society of enforced leisure, the most glorious single word in the vocabulary will have become work!"
Isaac Asimov, visit to the 2014 World's Fair, 1964
57. 請打下面的指令
echo hello world (enter)
滑鼠游標到顯示的 hello world 那行中的 world
Double click ( 左鍵 )
Click ( 左鍵 )
echo 後 click 中鍵
echo 後按 shift + ins
58. 請打下面的指令
echo hello world (enter)
滑鼠游標到顯示的 hello world 那行中的 world
Double click ( 左鍵 )
Ctrl + shift + c
echo 後 Ctrl + shift + v 再按 enter
ctrl + l
ctrl + shift + t
59. 變數 , IFS 以及 quote
VAR1=my test
echo $VAR1
VAR1="my test"
echo $VAR1
for i in $VAR1; do echo $i ; done
63. Job control
while [ true ] ; do echo test ; sleep 5 ; done
Enter
Ctrl + c
64. Job control
while [ true ] ; do echo test ; sleep 5 ; done &
Enter
vi (enter)
Ctrl + z
jobs (enter)
fg 1 (enter)
Ctrl + c
fg 2 (enter)
Quit vi
65. Return value and conditional
ls (enter)
if [ $? = 0 ] ; then echo ok; else echo bad; fi
(enter)
ls --bad (enter)
if [ $? = 0 ] ; then echo ok; else echo bad; fi
(enter)
66. Return value and conditional
ls && echo ok || echo bad
ls --bad && echo ok || echo bad