denysrad / 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 -R test1 test2  

• Delete file test1.txt inside test2 directory.

rm test2/test1.txt  

• Rename test2 folder into directory_without_file

mv test2 directory_without_file  

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

echo 'test1' > test1/test1.txt  

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

cat test1/text1.txt

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

echo 'test2' >> test1/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 testdir      
chmod 000 testdir  

• Try to remove that directory.

rmdir testdir  

• Create simple script which prints current date. Try to execute it.
  Скрипт тут

bash date.sh
2021-05-04

Log checking

• Count lines in the file test.txt.

wc -l test.txt   

• Show last 3 lines from the test.txt file.

tail -n 3 test.txt  

• Hom many uniq IP addresses accessed the website ?

awk '{ print $1 } ' test.txt | sort | uniq | wc -l  

• IP address with most requests.

awk '{ print $1}' test.txt | sort | uniq -c | sort -nr | head -n 1  

• Top 3 IP addresses by amount of POST requests.

grep POST test.txt | awk '{ print $1}' | sort | uniq -c | sort -nr | head -n 3  

• 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
  Скрипт тут

bash googlescript.sh  
/fujix/common/images/renew2009/bnr/bar_latvia.gif  
/greenbox/greenbox/cabinet/list7/7146.jpg  
/?option=com_k2&view=itemlist&task=user&id=141953  
/robots.txt  
...