Writing a c program that accepts input from keyboard,rather than from a file is advantageous because

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• Writing a C program that accepts input from keyboard, rather than from a file is advantageous because
• If are does not want anyone else to read or write to a file named datfile,except through a program in a file filex,then he may use
• 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
• Flow control in a shell program allows parts of a shell program to be executed
• Flow control in a shell program allows parts of a shell program to be executed
• The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is
• Below is the codeint main() { int fd1, fd2; struct stat buff1, buff2; fd1 = open(“1.txt”, O_RDWR); fd2 = open(“2.txt”, O_RDWR | O_APPEND); lseek(fd1, 10000, SEEK_SET); write(fd1, “abcdefghij”, 10); write(fd2, “abcdefghij”, 10); fstat(fd1, &buff1); fstat(fd2, &buff2); printf(“ %d %d”, buff1.st_size, buff2.st_size); return 0; } Before running the program, the file 1.txt and 2.txt size is 20 each. What is the output?
• The kernel itself is a program that usually lives in the root partition of the UNIX filesystem. Most Linux distributions call it           and it often a symbolic link to the real kernel file which lives in “/boot”.
• Multiple Unix commands can be put into a file to form a program. This is called a
• comments are placed inside a perl program file using the character