• vi summary
• Vi reference card

• 從 /var/tmp/exercise-one 找出含有你帳號的檔案
• 每人的帳號會出現三次, 因此極大機率會出現在三檔案中
• 將找到的檔案名字寫到一個檔案中, 每個名字一行.
  如為 /var/tmp/exercise-one/Sam/likes/a-duck
  則只需輸入 Sam/likes/a-duck 即可. 注意大小寫.
  此檔案必須置於 ~/unix-1101/exer1 底下.
• 編輯器可用 joe, nano, pico
• deadline: 2021 Oct 13, 00:05 am

    /var/tmp/exercise-two/Alice/likes/an-ox             <---- a file
    /var/tmp/exercise-two/Emily/has-bought/a-horse      <---- a file
    /var/tmp/exercise-two/Gary/has-bought/a-rhino       <---- a directory
    /var/tmp/exercise-two/Gary/has-bought/a-rhino/less  <---- a file
    /var/tmp/exercise-two/Gary/has-bought/a-rhino/is    <---- a file
    /var/tmp/exercise-two/Gary/has-bought/a-rhino/more  <---- a file
    /var/tmp/exercise-two/Mary/is/a-snake               <---- a file
    

    ~/unix-1101/exer2/
    |---Alice/
    |   `---likes/
    |       `---an-ox
    |---Emily/
    |   `---has-bought/
    |       `---a-horse
    |---Gary/
    |   `---has-bought/
    |       `---a-rhino/
    |           |---is
    |           |---less
    |           `---more
    `---Mary/
        `---is/
            `---a-snake
    

• 有框的為目錄, 其餘為 file.
• 檔案若在 /var/tmp/exercise-three 下可以找到, 則從其處複製, 若找不到, 則為一空檔案.
• 若為 hard link, 則新建出的檔案間的關係也是 hard link.
• 若為 symbolic link, 則新建出的檔案間的關係也是 symbolic link,
  Use a relative pathname to build a symbolic link.
• deadline: 2021 Oct 27, 00:05 am

• 從 /var/tmp/exercise-four 找出含有你帳號的檔案或者是檔名含有你帳號的檔案.
• 每人的帳號會出現三次, 因此極大機率會出現在三檔案中
• 將找到的檔案名字寫到一個檔案中, 每個名字一行.
  如為 /var/tmp/exercise-four/Sam/likes/go-go-s108321001
  則只需輸入 Sam/likes/go-go-s108321001 即可. 注意大小寫.
  此檔案必須置於 ~/unix-1101/exer4 底下.
• 檔案權限需設為 -r--rw-r--
• deadline: 2021 Nov 03, 00:05 am
• 請善用 find, grep 等指令.

• 建立二個執行檔, 名為 do-at, do-cron
  • 每個執行檔的第一個指令須為 date.
  • 每個執行檔最少包含二個指令
  • 用編輯器建立檔案, 再用 chmod 切換執行的權限.
• 用 at 在 2021/Nov/17, 03:00 --- 05:00 執行 do-at 一次, 執行的輸出須 轉向到檔案 output-at.
• 用 crontab 設定在 2021/Nov/17, 01 至 05 這五個小時內, 每小時 執行 do-cron 二次. 執行的輸出須轉向到檔案 output-cron,
• at 及 crontab 所需的程式及輸出檔案皆放在 ~/unix-1101/exer5 下.
• 注意作業要求的檔名, 不符規定者將扣分.
• at 及 crontab 的設定須在 2021/Nov/17, 00:05 前完成.

• Use commands, pipe, and/or I/O redirection to complete the program.
• Refer to `fmt, sort, head, tail'.
• If you use temporary files, you should remove them before program terminates.
• For example:

        $ cat IN-6 
        123 13 -9
        23
        1 2 3 3 4 9 8
        $ ./exer6.sh < IN-6 
        -9
        123
        $ 
      

• deadline: 2021 Dec 01, 00:05 am

• For example:

        $ cat IN
        klim 120
        oak -233
        cat -999
        goo 12
        $ ./ex7.sh < IN
        max is klim, value = 120
        min is cat, value = -999
        $ 
      

• deadline: 2021 Dec 08, 00:05 am

Each set forms a line. So for every two lines your program will generate a line. The output should be a line consisted of elements of intersection set. And it should be sorted in ascending order, no duplication.

There is no space before the first number and after last number, and only one space is used to separate two adjacent numbers.
If the intersection is empty, just show "empty".

• For example:

        $ cat IN-8 
        9 8 7 2 2 2 7 
        1 2 3 4
        10 19 28 9
        1 2 3 4
        10 10 9 8 7
        10 9 8 7 6 5 4 3 2 1
        $ 
        $ ./exer8.sh < IN-8
        2
        empty
        7 8 9 10
        $ 
      

• deadline: 2021 Dec 15, 00:05 am

• For this exercise, this C program is asked to figure out the minimum and maximum for a sequence of integers.
  • Each sequence of integers is beginned with a number, N, then followed by N integers.
  • If N == 0, then program stops.
• Your script should check
  Is the C-program provided?
  Does this C-program exist?
  Can this C-program be compiled successfully?
  If all the above checks are fine, then try to run the C-program with all the test cases in the same directory.
  Each test case consists of IN-d and OUT-d where d = 1,2,3,....
  
• For example:

        $ ls 
        IN-1  IN-4  IN-7   OUT-2  OUT-5  OUT-8      m.c
        IN-2  IN-5  IN-8   OUT-3  OUT-6  exer9.sh*  minmax.c
        IN-3  IN-6  OUT-1  OUT-4  OUT-7  gen.sh*    wrong.c
        $ 
        $ ./exer9.sh 
        ./exer9.sh xxxx.c
        $ 
        $ ./exer9.sh hello.c
        hello.c not existed
        $ 
        $ ./exer9.sh m.c
        a.out not generated successfully
        $ 
        $ ./exer9.sh wrong.c 
        test 1 ok
        test 2 ok
        test 3 fail
        test 4 fail
        test 5 ok
        test 6 ok
        test 7 fail
        test 8 fail
        $ 
        $ ./exer9.sh minmax.c 
        test 1 ok
        test 2 ok
        test 3 ok
        test 4 ok
        test 5 ok
        test 6 ok
        test 7 ok
        test 8 ok
        $ 
      

• The IN-* and OUT-* and others are put into /var/tmp/exer9.
• deadline: 2021 Dec 22, 00:05 am

• Create an awk script which calculates the average for each user.
• For example:

        $ cat IN-10 
        # this is a comment
        joejoejoe 10 20 30 #this is also a comment
        OAK -999 10 # 10000
        joeJOE 2000
        oak 10
        milk 1000 # 2000
        $ ./ex10.awk IN-10 
        OAK = -326.33
        MILK = 1000.00
        JOEJOE = 515.00
        $ 
        

• Beware of the comment. You have to remove comments first.
  A comment is beginned with a '#' and extends to the end of line.
• Each line, if it is not a comment line, begins with a name, followed by numbers.
• The name are case-insensitive and only first 6 characters are considered.
• Put your program under ~/unix-1101/exer10.
• Deadline: 2022/Jan/05, 00:05