unix lab2 exercise

Lab Exercise –2 (UNIX Files and Links) Note: The answer to Question No 1. should be stored in a separate file in your login The bold letters in Question No 1 can be different depending upon the User ID Follow the following instructions before doing Lab Exercise -2    Create a directory lab2 in your login Create 2 files test1, test2 and a sub-directory ip inside lab2 directory Create a new file test1 inside ip directory 1. Here is the normal permission setting of a sub-directory structure: $ whoami aa $ ls -lR -rw-r--r-- 1 aa faculty 154 Jan 4 16:38 test1 -rw-r--r-- 1 aa faculty 64 Jan 4 15:00 test2 drwxr-xr-x 1 aa faculty 512 Jan 8 18:01 ip/ ip -rw-r--r-- 1 aa faculty 154 Jan 9 17:32 test1 a) Here is the new setting #1: $ whoami aa $ ls -lR -rw-r--r-- 1 aa faculty 154 Jan 4 16:38 test1 -rw-r--r-- 1 aa faculty 64 Jan 4 15:00 test2 drwxr-xr-x 1 aa faculty 512 Jan 8 18:01 ip/ ip -r--r--r-- 1 aa faculty 154 Jan 9 17:32 test1 Give the command to change from the normal setting to the new setting (permission) #1. How is behavior of the following commands under this new setting different from that in the normal setting? Why? $ cp test2 ip/test1 $ mv test2 ip/test1 $ rm -R ip b) Here is the setting #2: $ whoami aa $ ls -lR -rw-r--r-- 1 aa faculty 154 Jan 4 16:38 test1 -rw-r--r-- 1 aa faculty 64 Jan 4 15:00 test2 dr-xr-xr-x 1 aa faculty 512 Jan 8 18:01 ip/ ip -rw-r--r-- 1 aa faculty 154 Jan 9 17:32 test1 Give the command to change from the normal setting to the new (permission) setting #2. How is behavior of the following commands under this new setting different from that in the normal setting? Why? $ cp test2 ip/test1 $ rm ip/test1 $ mv ip/test1 ip/test2 c) Here is the setting #3: $ whoami aa $ ls -l -rw-r--r-- 1 aa faculty 154 Jan 4 16:38 test1 -rw-r--r-- 1 aa faculty 64 Jan 4 15:00 test2 drw-rw-rw- 1 aa faculty 512 Jan 8 18:01 ip/ Give the command to change from the normal setting to the new (permission) setting #3. (assume the content inside the directory "ip" is not changed.) How is behavior of the following commands under this new setting different from that in the normal setting? Why? $ ls -lR $ cp test2 ip/test1 $ cp ip ip2 $ cp -R ip ip2 $ mv ip ip3 2.         Try to find out what is the use of the following commands(terms): indent cb find fg fc set ps kill