Linux Intro Skills Exam 11-12 Provide the command(s) and any additional steps to complete each task. 1. Save the output of the 'date' command to a file called "times.txt". 2. Append the contents of another invocation of the 'date' command to times.txt. 3. Is-1~/.bashrc ~/.idontexist' outputs to both STDOUT and STDERR. Discard the error message by redirecting STDERR to /dev/null. 4. Display only the lines of output of the 'set' command containing the word "bash", ignoring case. 5. Without using 'vi' or another editor, write a single command to modify and create a backup of the /home/sam/dgvideos.html file, changing all links to use 'https://' instead of 'http://'. 6. Select only the lines of /etc/passwd that end with "bash" and print just the first field (username) to the screen. 7. 'netstat -t' shows all listening TCP sockets on your system. Send that output through a pipeline to count the number of listening TCP sockets. (Hint: You will need to filter out the column headers before counting.) 8. View the contents of the $PATH shell variable. Replace all instances of the existing delimiter with newline characters to reorient the data into a single-column list. Remove any lines that start with /root. Save the resulting list to a file called "pathdirs.txt". 9. Starting with the output of the 'Ismod command (which shows currently loaded kernel modules/drivers), use a series of filters to discard the header line, sort by size from highest to lowest, print only the module name column, and save the results to a file called "modules_by_size.txt". 10. Use a subcommand within an 'echo` command to display today's date as part of the output string. (e.g. "Today's date is FILL_IN_THE_BLANK. It's a great day to use Linux.")