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# What command can display the NIC's MAC address?
# What command is used to get a list of running processes on your newly-installed system?
# Write the Linux command to download the on-line file: http://linux.server.org/package.tar.gz
# Write a Bash Shell Script to prompt the user for a directory, and then display the file types for all files in that specified directory (hint: use the '''read''' command and then use the '''file''' command and '''command substitution''' with the '''ls''' command). Test the Bash Shell script by adding execute permissions and run the Bash Shell Script.
# Modify the previously created shell script to perform error checking after prompting for a directory to test if the specified directory does not exist. If it does NOT exist (i.e. true), display an error message indicating that the directory does NOT exist, and issue the command exit 1 to terminate the Bash Shell Script. Test the Bash Shell script by adding execute permissions and run the Bash Shell Script.
