?16? ?7? Shell???? 7.1 Shell???? ????????

1
?16??7? Shell????7.1 Shell????????????
2
? ?

• ???Shell???
• ??????Shell???
• ?????????Shell???

3
???1????

• Geecy???????????Tom???????????????????????????C??
  ??????????,?????????????????????,??????????1???-
  ?-?,?2?????

4
???1????(?)

• date??????????
• ?? ? ? ??? ?? ?
• ??,Tom???????,???????????,????date??,???????,?????
  ??????????date???????????????????1??,?????????????

5
???1???

• ?????????????????????
• (1)???????
• ????date??,???????,???vi???????,????????????,???
  ????C???????
• ?????date????????????????1??,?????????,?????????
  ??

6
???1???

• ?????????????????????
• (1)???????
• (2)??????
• ?????????????,??????,???????????????,??????????
• date cut -f2,3,6 -d " tr " " "-" gt
  data.txt
• date cut -f4 -d " " cut -f1,2 -d "" gtgt
  data.txt

7
???1???(?)

• ????????????,?????
• ???,??????Shell???????????

8
7.1.1 ??Shell??

• ???????????????????,????????????????????
• ??????????
• ?????????Shell??(Shell Script)??????
• ????????????????shell???????????,??????????
• ?????????????shell???????????,????????????????

9
7.1.2 ??????

• ??vi???????fist_script
• vi first_script
• ????????
• ls -F /
• date
• ???????vi?

10
7.1.3 ????

• ???????????Shell????????
• bash first_script
• ????????????shell??,???bash,????????
• ???shell?????????first_script,????????????,???????
  ?
• ???????????????,?????shell???????,??????????shell?
  ???

11
7.1.3 ????(?)

• ???????????,???????????????????shell,??,??????,???
  ????
• !/bin/bash --??!????????????,????shell??????
• ???????FAP,????????????
• chmod ux first_script
• ??,???????????????./first_script

?????
12
7.1.3 ????(?)

• ????????./first_script ??./
• ????????PATH??????????,??????./?????????????????
  ???????
• ??,?????????????????????????????????
• ???????/etc/shell??????????shell????????

13
7.1.4 ????

• ???????,?????????????????(Comment)?
• ???????????,?Shell????????????,????,????????
  ??

14
???1?????

• 1????vi?????update
• 2????????
• 3????update??????chmod ux update
• 4???????????update??????????data.txt

!/bin/bash Add a formatted string of date to data.txt date cut -f2,3,6 -d " " tr " " "-" gt data.txt Add a formatted string of time to data.txt date cut -f4 -d " " cut -f1,2 -d "" gtgt data.txt Display the content of data.txt cat data.txt