Which command is used to change permissions of files and directories?

Related MCQs

• Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?
• If a file has read and write permissions for the owner, then the octal representation of the permissions will be
• Which command is used to make all files and sub-directories in the directory (progs) executable by all users?
• What command is used to copy files and directories?
• What is the command to set the execute permissions to all the files and subdirectories within the directory /home/user1/direct
• 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) umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH); fd2 = open(“file2”, O_CREAT | O_RDWR, PERMS) return 0; } The newly created files file1 and file2 will have the permissions respectively
• Which command is used to set the three permissions for all the three categories of users of a file?
• Which command is used to list out all the hidden files along with the other files?
• You want to add files to a previously created tar file. You want to replace existing files with newer files, how can you do this ?
• Which column contains all details of the permissions of a file when you issue the ls - l command?