# Day 9 #90DaysOfDevops

For day 9, i moved on to chapter 2 of ‘Linux basics for hackers’ titled text manipulation.

Linux deals with files and most often, these will be text files. knowing this, manipulating text is very crucial for managing linux and linux applications.

This chapter taught me how to:

1. use the *more* & *less* command to view contents of a file. To view a specified number of lines of contents either from the top or bottom can be done with this command. *more or less -20 password.lst* . This command shows the top 20 or bottom 20 of a file depending on your request.
    
2. use the *nl* command to list the contents of a file.
    
3. use the *grep* command to filter text
    
4. use the *sed* command to find and replace
    

i tried these commands coupled with the ones i learnt in the previous lesson and turned linux into my playground. looks fun so far.

Cheers to day 9 and many more days.