UNIX Real Time Scenarios

1.How to find out row count in a file?
A. wc -l filename

2. How to display  first 5 lines?
A. head -5 filename

3.How to display last 5 rows?
A. tail -5 filename

4.How to copy files from once server to another sever?
scp filename username@servername:path
ex: scp abcd.txt computer@124.127.55: ETL\source\files

5.How to delete files
A. rm filename

6.How to diplay file?
A. cat filename

7.How to display zip file?
A. Zcat filename

8.How to unzip file?
A. gunzip filename

9.How to rename file?
A. mv oldfilename newfilename
Ex: mv abc.txt abcd.txt

10.How to display first 5 lines in zipfile?
A. zcat filename | head -5

11. How to display last 5 lines in zipfile?
A. zcat filename | tail -5

12. How to get the process id?
A. ps -ef | grep job(process id)

13.How to Kill the job?
A. kill -9 jobname

14. How to display list of fles(list revers order date)?
A. ls -lrt