CIS206_3

UNIX ASSIGNMENT - IXQuestion 2: Write a command to list all the files inside a folder i.e. if there is a folder inside a folder then it should list all files inside the sub-folder which is inside the folder to be listed.

what would do to  a folder so that only the user who created the file in the folder can delete it

Data Communication Channels in Computer Systems  Explain (with the aid of diagrams as appropriate) how you would write a procedure using commands stored in a Windows batch file to copy all the contents of a specific folder on a user’s computer to another folder on an external hard drive. NOTE: The data backup should occur once every day at a specific time; Furthermore, assume that the files to be copied are stored in a directory called “D:\my_files” and that these files must be copied to a directory called “E:\backup”.

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Step 1: Set up a worksheet with the appropriate headings and tab names to displaythe filesStep 2: Get the user to select the starting point from which the search must beginStep 3: Get a count for all files and folders in the chosen path and prepare status barStep 4: Monitor time elapsed and give user a chance to exit if it is taking too longStep 5: Get all file and folder names and store in the new worksheet(s) created in step 1Step 6: Save in a new workbook Note that steps 3 and 5 are similar, because you have to read the headers of all fileobjects to determine how many there are. It is necessary to do this so that a message with progress status can be displayed . Write code to implement these steps:

System AdministrationShell Scripts: exercises sheet 2Exercise 1 :Write a shell script that displays the contents of the directories existing in a directory given asargument (use the for loop)Exercice 2 :Write a shell script that displays the contents of subdirectories of the directories that are given asarguments. The script should be called with any number of parameters.Exercice 3 :Write a shell script that displays the nthline of a file(you can use head and tail). The integer n andthe input file name are given by the user in response to the request of the script (use the commandread). Try to do all possible tests (file exists or not etc ...)Exercise 4 :Write a shell script that give a variable x the following content “School man women fish dog catsheep” and then print each word in a separate line on the screen (use the for loop).Exercise 5 :Propose a shell script that displays the number of files in the present working directory .

18 What is the octal permission code for setting the permissions of a file so that the owner can read, write, and execute; the group can read and write; and others can only read it? 21 O 764 24 O 761 O 724 O 751

File Management: UNIX Describe what happens for each of the following uses of the 'mv' command: moving a regular file onto an existing regular file moving a directory onto an existing regular file moving a directory onto another existing directory moving a directory onto a subdirectory within itself SHOW THE CODE, Like the script of it

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System Administration Shell Scripts: exercises sheet 2 Exercise 1: Write a shell script that displays the contents of the directories existing in a directory given as argument (use the for loop) Exercice 2: Write a shell script that displays the contents of subdirectories of the directories that are given as arguments. The script should be called with any number of parameters. Exercice 3: Write a shell script that displays the nth line of a file(you can use head and tail). The integer n and the input file name are given by the user in response to the request of the script (use the command read). Try to do all possible tests (file exists or not etc...) Exercise 4: Write a shell script that give a variable x the following content "School man women fish dog cat sheep" and then print each word in a separate line on the screen (use the for loop). Exercise 5: Propose a shell script that displays the number of files in the present working directory.

In UNIX/Linux, what would the octal notation be for a file with the following permissions:. • Owner can read, write, and execute • Members of the group can read and write • Members not belonging to the above can only read

*C Programming Write a ccedit program that takes an item number as a command line argument.  It should retrieve the specified item and for each attribute (not including the item number) print out the current value and give the user the option to change it.  Include proper file locking.