crocodility / 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  /home/vladstr/Desktop/test1 /home/vladstr/Desktop/test2

• Delete file test1.txt inside test2 directory.

rm -f 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.txt

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

cat 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.txt

• check the size of test1 directory

ls -sh; du -sh

Permissions

• Create test directory and block access for all to it.

mkdir noaccess | chmod 000 noaccess

• Try to remove that directory.

rm -r noaccess // tells that you are trying to remove write-protected directory
/ rm -rf noaccess // deletes the directory 

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

#!/bin/bash date // to execute ./date.sh

Log checking

• Count lines in the file test.txt.

wc -l // 200 lines

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

tail -n 3

• Hom many uniq IP addresses accessed the website ?

cat test.txt | grep -o "[0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+" | sort | uniq > ips.txt  
output is in file ips.txt file

• IP address with most requests.

cat test.txt | awk '{print $1}' | sort -n | uniq -c | sort -rn >topips.txt
output is in topips.txt file

• Top 3 IP addresses by amount of POST requests.

There is no ips with POST requests

• Which IP addresses received 403 error ?

searching with grep '403'/'forbidden'/'error' test.txt did not give any results

• Task with * . Write script to show which pages Google checked from the website

cat test.txt | grep 'Google' | awk '{print $7}'

Replace

Replace IP address with most requests on 127.0.0.1 in test.txt file

vladstr@shared-MS-7B33:~/Desktop/test_ggs$ sed 's/114.119.140.234/127.0.0.1/' test.txt