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<ul><li value="4">Demonstrate the use of Bash Shell scripts to automate routine tasks (generate a customized software report)</li></ul>
<u>Rescuing Your System</u>
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[[Image:grub1.png|thumb|right|600px|Press '''e''' at Grub Boot Menu to edit]]
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There are a few "classic problems" that students can encounter with their virtual machines and their host machine after performing lab2. Although all OPS235 students may not encounter these problems, it is good to be aware of what a potential problem may look like, and know how to solve that problem.
'''A few common problems are:'''
*I Can't boot into Graphical Mode on my '''c7host''' machine
*I Forgot My '''Regular User''' Password
*I Forgot My '''root''' Password
*I Can't Start My Virtual Machine
*I Can't start my Host machine
'''Troubleshooting consists of 3 basic elements:'''
*'''Asking Questions''' (eg. what was done recently prior to problem?)
*'''Eliminating''' what the problem '''IS NOT'''
*'''Tenacity''' and '''patience''' (ability to focus on finding the cause of the problem)
If you cannot log graphically into your machine (first 3 common problems), there is a trick to boot your system into '''single-user''' mode. This mode does not provide networking, graphics, or logging in as other regular users, but can connect to a text-based interface as the '''root''' user. This method will only work if a GRUB (<u>'''Gr'''</u>and '''<u>U</u>'''nified <u>'''B'''</u>oot-loader) password has not been set, or that you haven't forgotten the GRUB password.
== Common Mistakes / Warnings ==