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→LINUX PRACTICE QUESTIONS
Your instructor may take-up these questions during class. It is up to the student to attend classes in order to obtain the answers to the following questions. Your instructor will NOT provide these answers in any other form (eg. e-mail, etc).
When answering Linux command questions, refer to the following Inverted Tree diagramDiagram. The linux directory is contained in your home directory. Assume that you just logged into your Matrix account. Directories are <u>underlined</u>.
[[Image:week5-dir.png|thumb|left|300px|]]
# Write a single Linux command: cat ~/a.txt ~/b.txt ~/c.txt and redirect stdout to a file called “good.txt” to the “tests” directory and stderr to a file called “bad.txt” to the “tests” directory. (overwrite previous contents for both files and use only relative-to-home pathnames).
# Write a single Linux command to redirect the stdout from the command:<br>cat a.txt b.txt c.txt to a file called wrong.txt contained in the “projects” directory and throw-out any standard error messages so they don’t appear on the screen (append output to existing file and use only relative pathnames).<br><br>
# Write a single Linux '''pipeline command ''' to display a detailed listing of the “projects “directory but pause one screen at a time to view and navigate through all of the directory contents. Use a relative-to-home pathname.# Write a single Linux '''pipeline command ''' to display the sorted contents (in reverse alphabetical order) of the “linux” directory. Use a relative pathname.
# Assume that the text file called “.answers.txt” contains 10 lines. Write a single Linux pipeline command to only displays lines 5 through 8 for this file. Use only relative pathnames.
# Write a single Linux '''pipeline command ''' to only display the contents of the “assignments” directory whose filenames match the pattern “murray” (both upper or lowercase). Use an absolute pathname.# Write a single Linux '''pipeline command ''' to display the number of characters contained in the file called “.answers.txt”. Use a relative-to-home pathname.# Write a single Linux '''pipeline command ''' to display the number of lines contained in the file called “questions.txt”. Use a relative pathname.# Write a single Linux '''pipeline command ''' to display only the first 10 characters of each filename contained in your current directory. Also, there is will be a lot of output, so also pause at each screenful so you can navigate throughout the display contents. Use a relative pathname.
# Create a '''table''' listing each Linux command, useful options that were mentioned in this tutorial for the following Linux commands: '''cut''' , '''tr''' , '''wc''' , and '''tee'''.
[[Category:ULI101]]
