vladkr2806 / test_ggs

Basic work with files

• Create directory test1
  mkdir test1

• Create file test1.txt inside the test1 directory.
  touch test1.txt

• Create copy of folder test1 with name test2.
  cp -rp test1 test2

• Delete file test1.txt inside test2 directory.
  rm test1.txt

• Rename test2 folder into directory_without_file
  mv test2 directory_without_file

• Insert 'test1' text into test1/test1.txt file.
  vim test1/test1.txt

• print the text from the test1/test1.txt file.
  cat test1/test1.txt

• Insert 'test2' into the end of test1/test1.txt file.
  echo "test2" >> test1.txt

• print the text from the test1/test1.txt file.
  cat test1/test1.txt

Permissions

• Create test directory and block access for all to it.
  mkdir test_2
sudo chattr +i test_2

• Try to remove that directory.
  rm: cannot remove 'test_2/': Is a directory

• Create simple script which prints current date. Try to execute it.
  touch test.sh
vim test.sh - #!/bin/bash date
chmod +x test.sh
./test.sh
  файл

Log checking

• Count lines in the file test.txt.
  wc -l test.txt

• Show last 3 lines from the test.txt file.
  tail -n3 test.txt

• Hom many uniq IP addresses accessed the website ?
  awk '{print$1}' test.txt | sort | uniq -c | sort -n | wc -l

• IP address with most requests.
  awk '{print$1}' test.txt | sort | uniq -c | sort -n | tail -n1

• Top 3 IP addresses by amount of POST requests.
  grep POST test.txt | awk '{print$1}' | sort | uniq -c | sort -n | tail -n3

• Which IP addresses received 403 error ?
  grep ' 403 ' test.txt | awk '{print$1}'

• Task with * . Write script to show which pages Google checked from the website
  #!/bin/bash
grep -i 'Google' test.txt | awk '{print$7}'
  файл

Replace

• Replace IP address with most requests on 127.0.0.1 in test.txt file
  sed -i "s/$114.119.140.234/$127.0.0.1/" test.txt
awk '{print$1}' test.txt | sort | uniq -c | sort -n | tail -n1
16 127.0.0.1

Скріпт, який знаходить і замінює IP адресу, яка найчастіше повторюється, на 127.0.0.1