yuriitsymborovych / test_ggs

Basic work with files

• Create directory test1

mkdir test

• Create file test1.txt inside the test1 directory.

touch test1/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_files

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

echo "test1" > /test1/test1.txt

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

cat /test1/test1.txt

OUTPUT

test1

• 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

OUTPUT

test1
test2

• check the size of test1 directory

du -sh /test1

Permissions

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

mkdir test3 
chmod 000 test3

• Try to remove that directory.

rmdir test3

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

Scrypt

Log checking

• Count lines in the file test.txt.

wc -l test.txt

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

tail wc -n3 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}' test.txt | sort | uniq -c | sort -nr | head -n 1

• 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

Scrypt

OUTPUT

/robots.txt
/robots.txt
/ecjoy/17810tmrr2811359.htm
/robots.txt
/robots.txt
/economy/index.html
/casecamp/7039dcwb3api11-abwh-151-mbj9.htm
/robots.txt
/robots.txt
/ads.txt
/vitosaka/12219lspkds-1722307.htm

Replace

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

awk '{print $1}' test.txt | sort | uniq -c | sort -nr | head -n 1
sed -i 's/114.119.140.234/127.0.0.1/g' test.txt