Q. To prevent accident logging out, we can use ____ as a keyword with the set command.

View solution

Q. Which of the following features of UNIX may be used for inter process communication?

View solution

Q. In a system, if 5 people are currently using the vi editor. then the number of corresponding processes will be

View solution

Q. The command echo welcome > /dev / tty

View solution

Q. dev/null

View solution

Q. The advantage of binary files over text files is that

View solution

Q. The permission bits of a file noname, can be set to _rws_ _x_ _x by the command.

View solution

Q. /bin/passwd has the user execution permission set to 's' because

View solution

Q. If one doesn't want anyone else to read or write to a file named datfile, except through a program in a file filex , then he may use

View solution

Q. Writing a C program that accepts input from keyboard, rather than from a file is advantageous because

View solution

Q. Which of the following string functions can be used to find the last occurrence of a given character in a given string?

View solution

Q. Consider the program:

main ( )
{
printf("He arose a victor from\n");
system ("date") ;
printf("the dark domain");
}

If a.out is the executable code corresponding to the above source code, then the command a.out > out f

View solution

Q. The default permission bits of a file when it is created for the first time, is controlled by

View solution

Q. Let x.c be a C source code. The command cc x.c > y

View solution

Q. A file x is created with the following contents

echo today is:
date

If you type x.then

View solution

Q. Shell script is preferable to other forms of programming because it

View solution

Q. Choose the incorrect statement.

View solution

Q. Files that store data in the same format as used in program are called

View solution

Q. To allow only one user to work with a particular file at a particular time, one has to use

View solution

Q. Which of the following remarks about realloc are true?

View solution