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problem1 copy a file with permissions 444 copy it again and explain your observations2 how do you ensure that all
problem1 what does a group member require to be able to remove a file2 if a files permissions are 000 can the superuser
problem1 what do you understand by the listing of a file how will you save the complete listing of all files and
problem1 what are two advantages of encrypting data stored in the database2 perhaps the most important data items in
problem1 make a list of security concerns for a bank for each item on your list state whether this concern relates to
problem1 suppose there are two relations r and s such that the foreign key b of r references the primary key a of s
problem1 look up the man pages of getchar and putchar before using them in a program that converts an msdos file to
problem1 write a program that accepts three positive integers from the keyboard with suitable validation it should
problem1 write a program that uses an if-else construct to check for a leap year2 write a calculator program that
problem1 write a program that repeatedly prompts for a nonzero integer to populate an array of size 20 using 0 to
problem1 write a program that prompts the user for an integer exceeding 10 validate the user input with an if statement
problem1 run the tty command and note the device name of your terminal now use this device name say devpts6 in the
problem1 look up the man page for the file command and then use it on all files in the dev directory can you group
problem1 what is the significance of these commandsi mv homeinclude ii cp -r bar1 bar2iii mv bin2 will the command cp
problem1 what is the sort order prescribed by the ascii collating sequence2 the commands ls bar and ls -d bar display
problem1 describe the contents of a directory explaining the mechanism by which its entries are updated by cp mv and rm
problem1 how will you find out the ascii octal values of the numerals and letters2 run the wc command with two or more
problem1 how will you copy a directory structure bar1 to bar2 does it make any difference if bar2 exists2 assuming that
problem1 look up the man pages of mkdir to find out the easiest way of creating this directory structure sharemancat12
problem1 can you have the same user-id more than once in the who output2 both your local and remote machines use
problem1 what is an escape sequence name three escape sequences used by the echo command and explain the significance
problem1 is an option also an argument how many arguments are there in this command cat lt foogt bar2 why shouldnt you
problem1 what is the difference between the mailbox and mbox2 the passwd command didnt prompt for the old password when
problem1 what is a pager name the two standard pagers used by man2 you located the string crontab in a man page by
problem1 why are the directories bin and usrbin usually found first in path2 what is whitespace explain the treatment