⟩ Syntax of any Unix command is a) command [options] [arguments] b) command options [arguments] c) command [options] [arguments] d) command options arguments
a) command [options] [arguments]
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Given a code snippet below?
#define PERMS (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)
int main() {
int fd1, fd2;
umask(0);
fd1 = open("file1", O_CREAT | O_RDWR, PERMS)
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The newly created files file1 and file2 will have the permissions respectively
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d) None of the aboveWhat is stored in logfile as per below mentioned code if we execute ./a.out > logfile?
int main() {
int fd;
close(1);
fd = open("logfile",O_RDWR, 0744);
write(fd, "Hello", 5);
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a) Hello
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c) World
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For the below mentioned code
int main() {
int fd;
fd = open("logfile", O_CREAT|O_RDWR, 0600);
lseek(fd, 5, SEEK_CUR);
write(fd, "Hello", 5);
return 0;
}
What is the logfile size now if it's initially was 1024 bytes?
a) 5
b) 1024
c) 1029
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