Hope all are doing good.
Please help me on below topics
1:How to search and replace a pattern from 10th line to last line in a file by using sed command
2:how to duplicate each line in a file on unix
3:how to print the lines end with ravi
4:We have a file contain 1-10 number need to print 3rd large number?
5:how to monitor a process in unix?
6:how to setup password less login in unix?
7:I have a file like below
nee to fetch only valid ip addresses
8:We have a .csv file need to fetch 4th row 5th column.