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Command Lines Part 2


Converting Files

Images

Convert from jpg to png?
$ convert image.jpg image.png 
 




 
 

Networking Stuff

Arp

Have a look at who on the network own which IP address:
$ arp
 


 

Ping

Is a server alive?
$ ping 8.8.8.8
 
 

Traceroute

Where are the network issues between us and them?
$ traceroute www.nuim.ie
 
 

Nmap

Scan the local 255 host subnet.
$ nmap 192.168.1.0/24

 
 


1-Liners

What is the total disk size of all MarkDown files in my homedir?
$ find ~ -name "*.md" | xargs du -ch
 
 
 
Generate numbers in a random order
echo {01..10} | sed 's/ /\n/g' | shuf -
 
 
 




 
 
 

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