How can we transfer files between various computers using Linux?
The best option depends on how much data you're trying to transfer between the computers and also how frequently. If both computers are on the same network then the best option is to enable the networking services and setup shared folders on the machines. Services like Ubuntu One and Dropbox would be good options too but a downside to them is that the data has to be uploaded to the cloud and then downloaded again to the 2nd machine you want to transfer it to. If it's a lot of data, you waste a lot of time waiting for it to upload and download. The last option would be some sort of removable media such as a usb key, cd/dvd or external hard drive.
there is one more way, connect two linux machines , if it is through router then no problems but if you are connecting them directly choose local link option to set up networking, then use ipmessenger or iptux like program to transfer files.
If you are looking for transfering the updates that you installed then use gpk-service-pack command
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#1: FTP/SSH/Remote Desktop
#3: USB Drive
#4: Email (attachment)
#5: Network Sharing (Depends if they are on your network)
Also see "How To Transfer Files Easily Between Linux Machines. If these other computers are on your network, there are protocols specifically designed for these transfers (RSync).