Unix / Linux:

NOTE: For problems 1-3, you must use find. No ls or grep! 1. Show the long listing for each file under /opt which LACKS a valid group name; do NOT display any error messages. Then count those files via a second command line. Copy/paste both command lines and output. Finally, use a vertical ellipsis to remove most of the output from the first command so that your answer isn't overly long. My count for this problem was 275. 2. Show the long listing for all Python files (those ending with .py) under /usr/bin. Copy/paste both your command and its output. 3. Show the long listing for all files in /var/spool/mail whose contents have not been modified in more than 10 years. (This means those users haven't received or removed any mail messages for a decade.) 4. Change your prompt to utilize at least two of the escape codes listed in Table 13-1. In my example below, I've changed my prompt to display the current time and full pathname of my current working directory. (For purposes of this assignment, I "hid" my command with the three question marks.) For this exercise, I want EVERY member of the group to copy/paste their two-line mini-session and send it to whoever's in charge of the submission. [mam-p@voyager ~]$ ??? 05:45:56 : N NOTE: For problems 1-3, you must use find. No ls or grep! 1. Show the long listing for each file under /opt which LACKS a valid group name; do NOT display any error messages. Then count those files via a second command line. Copy/paste both command lines and output. Finally, use a vertical ellipsis to remove most of the output from the first command so that your answer isn't overly long. My count for this problem was 275. 2. Show the long listing for all Python files (those ending with .py) under /usr/bin. Copy/paste both your command and its output. 3. Show the long listing for all files in /var/spool/mail whose contents have not been modified in more than 10 years. (This means those users haven't received or removed any mail messages for a decade.) 4. Change your prompt to utilize at least two of the escape codes listed in Table 13-1. In my example below, I've changed my prompt to display the current time and full pathname of my current working directory. (For purposes of this assignment, I "hid" my command with the three question marks.) For this exercise, I want EVERY member of the group to copy/paste their two-line mini-session and send it to whoever's in charge of the submission. [mam-p@voyager ~]$ ??? 05:45:56 : N