note_misc.txt

utility
#download

-wget
wget [address] #Downloading/saving
wget -O user_test1.sh https://raw.githubusercontent.com/krimsoda/Linux/main/sc_user_add.sh  #Downloading and renaming files 

-curl
curl [address] #contents display
curl -O [address] #Downloading/saving 
curl -o user_test1.sh https://raw.githubusercontent.com/krimsoda/Linux/main/sc_user_add.sh  #Downloading and renaming files
curl -K {file.txt}
##    file.txt    ##
-O
url = "https://raw.githubusercontent.com/krimsoda/Linux/main/note_misc.txt"
-O
url = "https://raw.githubusercontent.com/krimsoda/Linux/main/note_network.txt"


-scp
scp file.txt remote_username@10.10.0.2:/remote/directory  #Copy a Local File to a Remote System 
scp remote_username@10.10.0.2:/remote/file.txt /local/directory  #Copy a Remote File to a Local System

-rsync
rsync -r dir1/ dir2  #copy local system
rsync -a ~/dir1 username@remote_host:destination_directory  #Using Rsync to Sync with a Remote System (push)
rsync -a username@remote_host:/home/username/dir1 place_to_sync_on_local_machine  #Using Rsync to Sync with a Remote System (pull)

-git
git clone [git address]
git pull

History
set +o history # temporarily turn off history
# commands here won't be saved
set -o history # turn it back on
history -d [line] #delete a single command number 

Check Ports via lsof
lsof -nP -iTCP -sTCP:LISTEN
lsof -nP -i:[port-number]
lsof -nP -iUDP:53
nmap -n -PN -sT -sU -p- localhost  #Scan TCP and UDP ports