Chapter 10, Problem 5DE

It copies only files that have been modified since the date specified in the command's arguments. Why is it so powerful?

j) Find the number of lines in the password file, on the server. /etc/passwd k) Create a directory called PROJECT1 and copy all the hidden files from your home directory into the PROJECT1 directory. IMPORTANT: Do NOT use the -r switch on the cp command when copying the hidden files. It is NOT required and will cause other directory structures to be copied and then they can not be removed! l) Show the directory listing for the PROJECT1 directory in reverse alphabetical order. m) Remove the PROJECT1 directory and all files in that directory. n) Print the calendar for June 2000 and November 2005. You must show the calendar entries side-by-side.

Write the command taht will locate all files that have the suffix/extension of ".py". For each file that is located, the command should append the suffix/extension of ".backup" to the file.   So, if a file had the name "one.py", its new name would be"one.py.backup".

Following the execution of the command umask 731, the permissions of all newly created files and folders will be altered.What will the permissions be on all new files in this case? a. rw-rw-rw b.rwxrw-r--c. -- -r--rw d.-- --wx--x

Write the command that can be used to perform the following: Back up the contents of the /var directory (which contains symbolically linked files) to the second nonrewinding SCSI tape device on the system using the tar utility. Append the file /etc/inittab to the archive created in Exercise 2a. Create a tarball called /stuff.tar.gz that contains all files in the /root/stuff directory. Use the cpio utility to back up all files in the /var directory (which contains symbolically linked files) to the first rewinding IDE tape device that has a block size of 5KB. Perform a full filesystem backup of the /var filesystem using the dump utility and record the event in the /etc/dumpdates file. Create an image of the /dev/sdb4 filesystem to the /sdb4.img file. View the contents of the archives created in Exercises 2a, 2c, 2d, and 2e. Extract the contents of the archives created in Exercises 2a and 2c to the /root directory. Extract the contents of the archives created in…

Write ONE code that does all three things; count the number of files in each of your sub-directories using the for loop, read two numbers and display all the odd numbers between those two numbers, search for no password entries in /etc/passwd and lock all accounts.

After typing the ls –F command, you see the following line in the output:  -rw-r-xr- - 1 user1 root 0 Apr 29 15:40 file1What does this mean?*       a. User1 has read and write, members of the root group have read and execute, and all others have read permissions to the file.       b. Members of the root group have read and write, user1 has read and execute, and all others have read permissions to the file.       c. All users have read and write, members of the root group have read and execute, and user1 has read permissions to the file.       d. User1 has read and write, all others have read and execute, and members of the root group have read permissions to the file.

After typing the ls –F command, you see the following line in the output:-rw-r-xr- -    1 user1           root            0 Apr 29 15:40 file1What does this mean?a. User1 has read and write, members of the root group have read and execute, and allothers have read permissions to the file.b. Members of the root group have read and write, user1 has read and execute, and allothers have read permissions to the file.c. All users have read and write, members of the root group have read and execute,and user1 has read permissions to the file.d. User1 has read and write, all others have read and execute, and members of theroot group have read permissions to the file.