There are two good methods to see what ports are open in Linux you can use
nmap which is a port scanner and you can use netstat.
nmap can be used to scan your machine to see whats ports are open issue...
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How to low level format a SD memory card ?
The command dd is used to low level format the card
The command fdisk is used to create a new primary partition
The command mkfs.vfat us used to create the FAT32 file system
kerphi@ketchup:~$ sudo...