CIS_2550_Topic6_Lab

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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 Worksheet Topic 6: Standard Text Streams and Redirection & Managing Processes Your Name: Date: 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 Questions (10 points) Answer Using your class materials, and the Internet, describe each of the fol- lowing in your own words: (1 point each)  Standard Output  Error Redirection  Standard Input

Questions (10 points) Answer Using your class materials, and the Internet, describe each of the fol- lowing in your own words. Be sure to describe how each one of these works. (1 point each)  >  <  >> Given the following syntax describe: find /etc –name hostname 1> find_output.txt 2> /dev/null describe the location where standard output and standard error will be redirected? (1 point) Using your class materials and the Internet describe a Linux process. (1 point) Using your class materials describe one thing a user can do, and on thing they cannot do while waiting for a long running foreground process to complete. (1 point) Using your class materials and the Internet describe in your own words what the PID does, and why the PID’s on your system probably

Questions (10 points) Answer differ from that of the lab material. (1 point) 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 select 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 (10 points) 1. On Fedora Workstation , submit a screen capture of starting a background process of ‘ sleep 88888 ’ (2 points)

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2. On Fedora Workstation , submit a screen capture the process jobs list with two of the ‘ sleep 88888’ commands running in the back- ground. (2 points) 3. On Fedora Workstation , submit a screen capture of a background job that redirects the /dev/zero output into /dev/null. (4 points) 4. On Fedora Workstation, submit a screen capture of top command running (No need for name/datetime stamp on this output ). (2 points)

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