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browser, it is light-weight, almost always works, and does not require any configuration, as long as your networks is functional.
konqueror &
(in X terminal) File manager and web browser in one. Very nice, in many very comptetitive to mozilla. Comes with KDE.
pine
A good, old-fashioned, text-mode mail reader. Another old-fashioned and standard one is elm. Your mozilla mail will read the mail
from your Internet account. pine will let you read the "local" mail, e.g. the mail your son or a cron process sends to you from a
computer on your home network. The command mail could also be used for reading/composing mail, but it would be
inconvenient--it is meant to be used in scripts for automation.
mutt
A really basic but extremally useful and fast mail reader.
mail
A basic operating system tool for e-mail. Look at the previous commands for a better e-mail reader. mail is good if you wanted to
send an e-mail from a shell script.
kmail &
(in X-terminal) Nice, GUI mail program. I use kmail, it is much better than netscape mail. I can have multiple accounts and retrieve
mail from the smtp (local) server and pop3 servers (internet service provider) to the same mailbox. Simple and elegant. Supports
digital signatures.
licq &
(in X terminal) An icq "instant messaging" client. Another good one is kxicq. Older distributions don't have an icq client installed,
you may have to do download one and install it.
knode &
(in X terminal) Start my favourite newsgroup (usenet) reader. It is MUCH better than the netscape's built-in reader.
talk username1
Talk to another user currently logged on your machine (or use "talk username1@machinename" to talk to a user on a different
computer) . To accept the invitation to the conversation, type the command "talk username2". If somebody is trying to talk to
you and it disrupts your work, your may use the command "mesg n" to refuse accepting messages. You may want to use "who" or
"rwho" to determine the users who are currently logged-in. talk is one of the old-fashioned "standard" UNIX tools, yet it still can
be cool and useful in some situations.
telnet server
Connect to another machine using the TELNET protocol. Use a remote machine name or IP address. You will be prompted for your
login name and password--you must have an account on the remote machine to login. Telnet will connect you to another machine and
let you operate on it as if you were sitting at its keyboard (almost). Telnet is not very secure--everything you type moves through the
networks in open text, even your password! A competent system administrator on a computer "on-route" can read what you type. Use
ssh (requires some setup) for encrypted transmission.
rlogin server
(=remote login) Connect to another machine. The login name/password from your current session is used; if it fails you are prompted
for a password.
rsh server
(=remote shell) Yet another way to connect to a remote machine. The login name/password from your current session is used; if it fails
you are prompted for a password.
ssh servername -l username
(=secure shell) Connect to a server (remote login) using a secure connection. ssh is secure because encrypts all the data transfered
over the network using a pair of RSA"public-private" keys. If you don't specify the username, your current user name is assumed.
Both the client and the server must have ssh service (daemon) running. They are normally available on newer Linux distributions (e.g.,
RH7.0). Before using ssh, some setup may be necessary. The user creates his/her RSA key pair (for encryption) by running the command
ssh-keygen. This stores the private key in the file $HOME/.ssh/identity and the public key in $HOME/.ssh/identity.pub in the user's
Part 5: Linux Shortcuts and Commands 110
Linux Newbie Guide by Stan, Peter and Marie Klimas 01/08/2003
home directory. To allow automatic login, the user should copy the identity.pub to $HOME/.ssh/authorized_keys in his/her home
directory on the remote machine After this, the user can log in without giving the password. The most convenient way to use RSA
authentication may be with an authentication agent. See man 1 ssh-agent for more information. If automathic authentication
methods fail, ssh prompts the user for a password. The password is sent to the remote host for checking; however, since all
communications are encrypted, the password cannot be seen by someone listening on the network.
From: Benjamin Smith (edited for space):
I recently got openssh 2.9.2p1 up and running, along with the password-free login option. It took some doing and none of the howtos
covered this. Would you like the "magic tidbit" that makes it all work? Here it is: "the default is to SSH2 and DSA keys, which you [ Pobierz całość w formacie PDF ]

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