Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Commands for the following but only as an unprivileged user

- Create a new directory in /tmp/ called "quiz"
- Create /tmp/quiz/file1 containing "asdf"
- Create /tmp/quiz/file2 containing "1234"
- Create a new directory in /tmp/quiz/ called "sub1"
- Create a copy of /tmp/quiz/file1 called "file3" in /tmp/quiz/
- Create a copy of /tmp/quiz/file1 in /tmp/quiz/sub1/
- Create a copy of /tmp/quiz/sub1/ and all of contents called "sub2" in /tmp/quiz/
- Move /tmp/quiz/file2 to /tmp/quiz/sub2/
- Move /tmp/quiz/sub1/ inside of /tmp/quiz/sub2/
- Rename /tmp/quiz/sub2/ to /tmp/quiz/subdir/
- Copy all of the files ending with .repo from /etc/yum.repos.d/ to /tmp/quiz/subdir/
- Remove all files with "updates" anywhere in the name from /tmp/quiz/subdir/
- Remove /tmp/quiz/file1
- Securely delete /tmp/quiz/subdir/file2
- Rename /tmp/quiz/file3 to /tmp/quiz/file1
- Recursively remove /tmp/quiz/ and all of its contents, ignorning warnings

Expert Solution
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Step 1

Assuming the unprivileged user has write access to /tmp/ directory, here are the commands:

  1. Create a new directory in /tmp/ called "quiz"

mkdir /tmp/quiz

 

  1. Create /tmp/quiz/file1 containing "asdf"

echo "asdf" > /tmp/quiz/file1

 

  1. Create /tmp/quiz/file2 containing "1234"

echo "1234" > /tmp/quiz/file2

 

  1. Create a new directory in /tmp/quiz/ called "sub1"

mkdir /tmp/quiz/sub1

 

  1. Create a copy of /tmp/quiz/file1 called "file3" in /tmp/quiz/

cp /tmp/quiz/file1 /tmp/quiz/file3

 

  1. Create a copy of /tmp/quiz/file1 in /tmp/quiz/sub1/

cp /tmp/quiz/file1 /tmp/quiz/sub1/

 

  1. Create a copy of /tmp/quiz/sub1/ and all of contents called "sub2" in /tmp/quiz/

cp -r /tmp/quiz/sub1 /tmp/quiz/sub2

 

  1. Move /tmp/quiz/file2 to /tmp/quiz/sub2/

mv /tmp/quiz/file2 /tmp/quiz/sub2/

 

  1. Move /tmp/quiz/sub1/ inside of /tmp/quiz/sub2/

mv /tmp/quiz/sub1 /tmp/quiz/sub2/

 

  1. Rename /tmp/quiz/sub2/ to /tmp/quiz/subdir/

mv /tmp/quiz/sub2 /tmp/quiz/subdir

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