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Tutorial5: Redirection

60 bytes added, 14:43, 31 August 2020
LINUX PRACTICE QUESTIONS
'''Review Questions:'''
# Write a single Linux command to provide a detailed listing of all files in the '''/bin ''' directory, sending the output to a file called listing.txt in the “projects” “'''projects'''” directory (append output to existing file and use a relative pathname)# Write a single Linux command to redirect the stderr from the command:<br>'''cat a.txt b.txt c.txt''' to a file called '''error.txt ''' contained in the “assignments” “'''assignments'''” directory. (overwrite previous file’s contents and use only relative pathnames) # 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” “'''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” “'''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” “'''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” “'''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”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“'''questions.txt”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'''.
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