OT: unix newbie questions

[Carlos Lopez]

Please help i am losing my mind ... UNIX Newbee
 
23. How do you add a line to the end of an existing file "myfile" with date
stamp. (1) 




Ans : /home/clopez ed test.txt
        $a
        The last line of text.
        .
        w

        q

24. Display recent 10 java files, (with *.java extension) , in descending
order by time, latest to oldest time. (1) 


Ans : 

 

25. How do you set only read permissions to user, group and others in octal
mode for a file "myfile.txt" ? (2) 
Ans: 

26. You observed that some of your group members are fiddling with your file
"myfile" and you wanted to remove the read permission to your group. How do
you do? (1) 

Ans: 

 

28. Here is another long listing of a file. (1)


-rw-r----- 1 Y435678 odms 20 Sep 02 17:03 file.txt. 

 

What are the owner permissions? 

read, execute 
read, write 
write, execute 
all since s/he is the owner 

 

Ans: 

29. The file "users_data" has the following contents :  (1) 
Tom  Smith       7.00  15  105.00 
Rob  Sheryl       8.00 20  160.00 
Ken  Bradman  7.00 13   91.00 
Peter Smith      6.00 15   90.00 
Dennis  Smith   8.00 13  104.00 
Tom  Dave        9.00 12  108.00 

How do you sort the above file and redirect the output to another file
called "sortedusers" 

Ans :  

20. What is the command to list files in a directory : (2) 

A.     Having only three alphabets: 


Ans: 
B.     Starting with a digit and ending with a digit 


Ans: 

 
Carlos Lopez
 
Computer Tech
phone: (440)396-7474
email: lopez.carlos at adelphia.net
 
 
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