Here is a list of linux commands and files that have information that I found interesting or useful.
- w – this command shows you information about who is logged in
- dig domain.com – this gathers information about a domain name
- nslookup domain.com – Query DNS servers for information about domain names
- whois domain.com – Ancient command to find out more information about DNS
- cat file.txt – You can use this to join split avi files together ($ cat avimovie_part* > newavimovie_whole.avi ) or just to view the contents of a file
- du * – find the disk usage of a file or a directory ( I recommend using the -ch switch for outputting a total and making that total human readable)
- df – Disk freespace, pretty much self explaining but I use it with the -h switch to convert the bytes to megabytes or gigabytes
- tail file.txt – This shows you the last bit that was appended to a file. I use this with the -f switch to “follow” a file as it’s updated live
- finger username – find information about users
- sudo command – gain root privileges for the commends you’re using
Feel free to comment and add the commands that you find interesting.
