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operating-systems-course
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operating-systems-course/week11/ex2.sh

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  1. #!/bin/sh

  2. 

  3. chmod +x ex1.sh

  4. ./ex1.sh

  5. 

  6. echo "Amirlan" > lofsdisk/file1

  7. echo "Sharipov" > lofsdisk/file2

  8. 

  9. mkdir lofsdisk/usr

  10. mkdir lofsdisk/usr/bin

  11. mkdir lofsdisk/usr/lib

  12. mkdir lofsdisk/usr/lib64

  13. 

  14. # I am using Arch Linux, that's why some libraries may differ from Ubuntu

  15. # Sorry for the inconvinience

  16. 

  17. cp /bin/bash /bin/ls /bin/echo /bin/cat lofsdisk/usr/bin

  18. cp /lib/libreadline.so* lofsdisk/usr/lib/

  19. cp /lib/libdl.so.2* lofsdisk/usr/lib/

  20. cp /lib/libc.so* lofsdisk/usr/lib/

  21. cp /lib/libncursesw.so* lofsdisk/usr/lib/

  22. cp /lib/libcap.so.2* lofsdisk/usr/lib/

  23. cp /lib64/ld-linux-x86-64.so.2 lofsdisk/usr/lib64/

  24. 

  25. # symbolic links contain just the path, so after chroot they will pick the directories inside lofsdisk

  26. ln -sf /usr/lib lofsdisk/lib

  27. ln -sf /usr/lib64 lofsdisk/lib64

  28. ln -sf /usr/bin lofsdisk/bin

  29. 

  30. gcc ex2.c -o ex2.out

  31. cp ex2.out lofsdisk

  32. 

  33. printf "\nW/ CHROOT\n" > ex2.txt

  34. sudo chroot lofsdisk /ex2.out >> ex2.txt

  35. printf "\nW/O CHROOT\n" >> ex2.txt

  36. ./ex2.out >> ex2.txt