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May 27th, 2015
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  1. 1. groupadd ps8
  2.  
  3. 2. mkdir /home2
  4. useradd -m -s /bin/bash -d /home2/ddeby1ps8 -e 2015-06-30 ddeby1ps8
  5. useradd -m -s /bin/bash -d /home2/ddeby2ps8 -e 2015-06-30 ddeby2ps8
  6. id pkonopko1ps8; id pkonopko2ps8
  7.  
  8. 3. usermod -G ps8 ddeby1ps8
  9. usermod -G ps8 ddeby2ps8
  10. id ddeby1ps8; id ddeby2ps8
  11.  
  12. 4. sudo passwd ddeby1ps8
  13. sudo usermod -f 31 ddeby2ps8
  14.  
  15. 5. passwd -l ddeby1ps8
  16. passwd -u ddeby1ps8
  17.  
  18. 6. su ddeby1ps8
  19. touch ~/pusty.txt
  20.  
  21. 7. chmod g+w,o+w ~/pusty.txt
  22.  
  23. 8. chmod u-rwx ~/pusty.txt
  24.  
  25. 9. chmod 644 ~/pusty.txt
  26.  
  27. 10. chown ddeby2ps8 /home2/ddeby1ps8/pusty.txt
  28.  
  29. 11. mkdir /tmp/sticky
  30. touch /tmp/sticky/wazny_plik.txt
  31. chmod 1777 /tmp/sticky/wazny_plik.txt
  32. rm /tmp/sticky/wazny_plik.txt (brak dostepu)
  33.  
  34. 12. ls -l /usr/bin/passwd
  35. ustawiony BITSUID
  36.  
  37. 13. groupdel ps8
  38. userdel -r ddeby1ps8
  39. userdel -r ddeby2ps8
  40.  
  41.  
  42.  
  43.  
  44.  
  45.  
  46. 2.
  47. a) at now +1 minutes
  48. echo "Hello" > plik.txt
  49. b) at now +1 hours
  50. who >> plik.txt
  51. c) at now +3 days
  52. ps >> plik.txt
  53. d) at now +1 days
  54. df >> plik.txt
  55. 3. atq
  56.  
  57. 4. echo "student" >>/etc/at.deny
  58.  
  59. 5.
  60. crontab -e
  61. a) 0 */1 * * * who
  62. b) */30 * * * 1 who
  63. c) 0 6 * * 1 who
  64. d) 20 6,8,12,18 * * 1 who
  65. e) 0 */4 * * 1-5 who
  66. f) 0 12-15 1,13,20 * * who
  67.  
  68. 6. 0 8,14,22 * * * run-parts --reports /etc/cron/new
  69.  
  70. 7.
  71. #!/bin/bash
  72.  
  73. x=`atq | cut -f1`
  74.  
  75. for i in $x
  76. do
  77. atrm $i
  78. done
  79.  
  80. 8.
  81. crontab -r #usuwa więc wartość jest domyślna
  82.  
  83.  
  84.  
  85.  
  86.  
  87.  
  88. 1.
  89.  
  90. 2.
  91.  
  92. 3.
  93.  
  94. 4.
  95.  
  96. 5.
  97.  
  98.  
  99. ?? 6. aptitude show mc
  100. aptitude install mc
  101.  
  102. 7.
  103.  
  104. 8. df -h
  105. dd if=/dev/zero of=plikdysk bs=100M count=1
  106.  
  107. 9. sudo parted plikdysk mklabel plikdysk
  108.  
  109. 10. sudo parted plikdysk mkpart primary ext4 0 50m
  110. sudo parted plikdysk mkpart primary ext4 50 100m
  111.  
  112. 11. sudo kpartx -av plikdysk
  113.  
  114. 12. sudo mkfs.ext4 /dev/mapper/loop0p1
  115. sudo mkfs.ext4 /dev/mapper/loop0p2
  116.  
  117. 13. sudo mkdir /mnt/pierwszy
  118. sudo mount -t ext4 /dev/mapper/loop0p2 /mnt/pierwszy
  119.  
  120. sudo mkdir /mnt/drugi
  121. sudo mount -t ext4 /dev/mapper/loop0p2 /mnt/drugi
  122.  
  123. 14. sudo umont /mnt/pierwszy
  124. sudo umont /mnt/drugi
  125. sudo rmdir /mnt/pierwszy
  126. sudo rmdir /mnt/drugi
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