CIS_2550_Topic12_Lab complete

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Sinclair Community College *

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2550

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Computer Science

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Dec 6, 2023

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CIS 2550 – Lab Worksheets Topic 12: Maintaining Integrity & Fixing Filesystems Your Name: Phillip Harris Date: 11/11/23 Instructions : Complete the tasks described in this worksheet. Read the instructions carefully and submit evidence of your completed tasks (a screen shot is your evidence). Answer the questions below in the space provided.  Showing Evidence of Completion: Your evidence of completion is a screen shot, as described in each exercise. Use the tool of your choice to take a screen shot of the required content. Screen shots should be pasted at the end of this docu - ment.  Answering Questions: Your answers should be written in carefully edited college-level English, using complete sentences. Question2 (6 points) Answer Using your class material explain the purpose of an in- ode, and answer the following question in your own words: (2 points)  Are there any limitations on availability of in- odes?  When is the maximum number of inodes speci- fied? An inode is a file that holds information about a file. Inode limitations are decided by- when you create a filesystem, and also let you know the maximum amount once they are created.

Question2 (6 points) Answer Explain what happens when you run a file system check (fsck) on a mounted partition. What you must do to per- form the check and how this might affect any users us- ing the system. (2 points) If you were to run fsck on a mounted partition, you would get a warning saying that it will cause severe damage. You have to unmount the partition first that you are check- ing. It could affect users that are using files from the partition because you would be taking access away. Using your class material describe a super block, and how many exist for a single file system. Be sure to use your own words. (2 points) A superblock is a collection of data that shows the contents in a file system. Showing Evidence of Completion: Your evidence of completion is a screen shot, as described in each exercise. Use the tool of your choice to take a screen shot of the required content. Paste the screen shot into the table cell as indicated. Make your screen shot image small by clicking on it, then holding down the SHIFT key while dragging one of the corner nodes inward. If you’re using Windows try the Snipping Tool which lets you se- lect the area on the screen you want to capture. Unless noted all screenshots need a name and date stamp as such Use the command: echo “Your Name” && date this will generate two lines of output. Example: Put this before or after the requested output (NOT in a separate window and pic). If this is not done or visible in the output the submission will not be counted.

Screen Pics (14 points) 1. On any Linux System . Provide one screen capture displaying the df command, display the disk usage using the human readable format option . (3 points) 2. On CentOS Server. As root run the disk use ( du ) command on /root with the following (4 points): a. Displaying for all files, not just directories option. b. In human readable format option. c. Pipe it to sort using the numeric sort option.

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3. On CentOS Server (First, as root, run mkfs.ext4 /dev/sdb1 no screen pic of the mkfs output is needed). (7 points) Submit a screen shot of running file system check on /dev/sdb1 the screen shot the includes your syntax, and the completion of the checks.

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