Many thanks. This is a great tutorial. It helps to learn basic uses of ssh. I was looking for this. It saved my time from googling and reading long "man ssh" page. One last thing,reading other mail from fedora-list I knew that I must be the ssh administrator for log-in using ssh. How can I be the ssh administrator?Is it possible for me? Or is there any ssh server(free) where I can log-in using ssh without bothering about being ssh server administration or concerning of having an account in remote computer by the ssh administration. --- On Sun, 6/7/09, Chris Tyler <chris@xxxxxxxxxxx> wrote: > From: Chris Tyler <chris@xxxxxxxxxxx> > Subject: Re: ssh tutorial > To: "Community assistance, encouragement, and advice for using Fedora." <fedora-list@xxxxxxxxxx> > Date: Sunday, June 7, 2009, 12:04 AM > On Fri, 2009-06-05 at 23:39 -0700, > gmspro wrote: > > Would anyone tell how to use ssh command in brief? > > Let me try my hand at a basic primer... > > (1) SSH is used to login to a remote computer: > > ssh user@computer > > Or: > ssh -l user computer > > Where: > > 'user' is your username on the remote computer. > > 'computer' is the hostname of the remote computer, if it > has a DNS A > record or an entry in /etc/hosts, or the IP address. > > Examples: > > ssh jason@argonaut > > Logs in as 'jason' on the computer 'argonaut', assuming > that the IP > address for 'argonaut' is listed in the /etc/hosts file. > This approach > might be used on a small home network. > > ssh chris@xxxxxxxxxxxxxxxxxxxxxx > > Logs in as 'chris' on the computer > 'global.proximity.on.ca', where > 'global.proximity.on.ca' has a correctly-configured DNS > entry so it can > be resolved into an IP address. This approach is used for > almost all > publicly-accessible machines. > > ssh jane@xxxxxxxxxxx > > Logs in as 'jane' on the computer with the IP address > 172.16.97.1. With > this approach you need to know the IP address but don't > require an entry > in /etc/hosts or a DNS A record. This approach might be > used when > initially setting up some machines on a network. > > These commands will give you shell access on the remote > machine, after > you have provided your password. > > Additional information: > > - You can leave the username out if it's exactly the same > as the > username under which you logged in to the local machine: > > ssh global.proximity.on.ca > > - You can add a command name if you want to run just one > command instead > of accessing a shell. For example, to run 'who' on > zenit.senecac.on.ca I > could use: > > ssh chris@xxxxxxxxxxxxxxxxxxx > who > > - Adding the '-C' option (note the capital letter) turns on > compression. > If you're going through a slow connection, this can improve > performance. > If you're on a local connection (LAN), don't bother. > > - Adding the '-X' option (again, a capital letter) turns on > X11 > forwarding. This lets you run a graphical command remotely > and have it > display locally, assuming that the local system has an X > server (e.g., > the local computer is running Linux/BSD/Solaris/AIX/... > with a GUI, or > it's running OSX or Windows and an X server has been > started). For > example: > > ssh -XC chris@concord3 virt-manager > > ...will run the virt-manager application on concord3 and > display the > virt-manager graphical window on the local display. Note: > in some > situations, depending on the ssh server configuration, you > may need to > use '-Y' instead of '-X'. (Note that the -C option is also > being used > here; its use with -X is strongly recommended). > > (2) You can use the related 'scp' secure copy utility (or, > alternately, > sftp) to transfer files to and from a remote system using > ssh: > > scp user@computer:/path/to/file name > > This transfers /path/to/file from the account 'user' on the > remote > system 'computer' to 'name' on the local system. Note that > this is the > same syntax as the 'cp' (copy) command, except that > 'user@computer' is > placed in front of the source filename. > > Examples: > > scp chris@concord3:/etc/services c3s > > The file /etc/services on concord3 (using account name > 'chris') is > transferred to the file 'c3s' in the local current > directory. > > scp chris@concord3:~/todo.txt . > > The file 'todo.txt' in the home directory of user 'chris' > on 'concord3' > is transferred to the current directory ('.'). > > You can also transfer *to* a remote system, by putting the > user@computer > part in front of the destination file: > > scp todo.txt jason@xxxxxxxxxxxxxxxxx:/tmp/ > > The file 'todo.txt' on the local system (current directory) > is > transferred to the /tmp directory on the system > 'host3.example.com' > using the account 'jason'. > > (3) See the ssh documentation for information on how to use > ssh with > public/private keys, eliminating the need to constantly > retype the > password. > > Hope this is useful-- > > -- > Chris Tyler > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines > -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines