TASK - Flavours of linux
TASK - most used commands in real time (google)
TASK - find the particualar line in one file...?
TASK - sed ....?
TASK - i have a file if the file contain the word of error need to print..?
TASK - chown (user id) (file name) --> Change ownership of the file owner
TASK - chown -R (user id) (dir name) --> Change ownership of the dir owner
TASK - chgrp (Grp id) (file name) --> changing the ownership of the group
TASK - chgrp (Grp id) (dir name) --> changing the ownership of the group dir
TASK - how to permanent mount volume...?
TASK - type of zip ...?


1. login
2. root login
3. whoami
4. logout
5. mkdir -> to create a dir
6. touch -> to create a file
7. nano -> to create a file
8. vi -> to create a file
9. cp -> to copy he file or dir
10. mv -> to move the file or dir
11. ls -> to list the files and dir
12. ls -l -> long list
13. ll -> long list
14. ls -lrth - long list with time
15. ls -sh ->long list with size
16. rm -> to remove
17. rm -f -> to remove forcefully
18. rm -rf -> for dir

19. # In VI EDITOR:

 I   ---> insert mode
 esc   ---> escape mode
 v   ---> visual mode
:w    ---> save
:q   ---> exit
:wq   ---> save and exit
:wq!   ---> save and exit forcefully
:/   ---> to search the word
:%s/seach/replace
yy   ---> copy the 1 line
p   ---> paste 
dd   ---> delete the line
:set nu   ---> set line number
:set nonu    ---> remove the line number
gg (or) :$   ---> switch to the first line
shift + g   ---> switch to the last line

20. head -1 filename    ---> to view the first line from the start
21. tail -1 file name   ---> to view the first line from the last
22. chmod 	-> changing modification
23. top 	-> to view the cpu,mem 
24. kill -9 	-> to kill the running processor forcefuly
25. kill -15 	-> to kill the running processor properly
26. ps -ef 	-> to view the running processor
27. ps -ef | grep ec2-user 	-> to view the particular processor
28. du -sh 	-> to view the size of disk file
29. lsblk 	-> to view the entier disk attached in machine
30. df -h 	-> to view the disk size
31. gzip file name 		-> to compress the file in .gz
32. gunzip file name 		-> to unzip the file
33. history