Can you help me to know the commands for these problems?

1. Count the no. of users that are currently logged into the system.

2. Count the no. of lines in /etc/passwd that contains the pattern home.

3. Modify Question #2 so that you save all entries from /etc/passwd that contain the pattern home to a file called all.users before passing the output to be counted.

4. Sort the contents of the names file found under your home directory and display the sorted output in three-column format.

5. Create an alias whoson that displays the users currently logged into the system in alphabetical order.

6. Capture the user name, user id, and HOME directory of every user.

7. Modify Question #6 so that it sorts the list of user accounts by UID instead of user name.

8. Using input redirection, mail the file date.out to yourself.

9. Create two very short files called f1 and f2 using cat and output redirection.

10. Sort the file /etc/passwd on the third field. what happens?

Thank you...



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