Linux Commands Understanding

sudo apt update && sudo apt install pinta

&&
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For Linux beginners, the double ampersand tells bash, the default shell program on Linux, to run the next command only after the previous command is complete


sudo apt-get update && sudo apt-get install pinta
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lsof:
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rizvi@ronty-HP-ProBook:~/workspace/mittal_dev_web$ sudo lsof -i:8080
[sudo] password for rizvi:
COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
java    1222 root   43u  IPv6  20794      0t0  TCP *:http-alt (LISTEN)

rizvi@ronty-HP-ProBook:~/workspace/mittal_dev_web$ sudo kill -9 1222

lsof is a command meaning "list open files"
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