Putty start options real estate
This chapter provides a general introduction to some more advanced features of PuTTY. For extreme detail and reference purposes, chapter 4 is likely to contain more information. A lot of PuTTY's complexity and features are in the configuration panel. Once you have worked your way through that options started a session, things should be reasonably simple after that. Nevertheless, there are a few more useful features available. Often in a PuTTY session you will find text on your terminal screen which you want to type in again. Like most other terminal emulators, PuTTY allows you to copy and paste the text rather than having to type it again. Also, copy and paste uses the Windows clipboard, so that you options paste for example URLs into a web browser, or paste from a word processor or spreadsheet into your terminal session. PuTTY's copy and estate works entirely real the mouse. In order to copy text to the clipboard, you just click the left mouse button in the terminal window, and drag to select text. When you let go of the button, the text is automatically copied to the clipboard. You do not need to press Ctrl-C or Ctrl-Ins; in fact, if you do press Ctrl-C, PuTTY will send a Ctrl-C character down your session to the server where it will start cause a process to be interrupted. Pasting is done using the right button or the middle mouse button, if you have a three-button mouse and have set it up; see section 4. When you click the right mouse button, PuTTY will read whatever is in the Windows Clipboard and paste it into your session, exactly as if it had been typed at the keyboard. Therefore, be careful of pasting start text into an editor that does automatic indenting; you may find that the spaces pasted from the clipboard plus the spaces added by the editor start up real too many spaces and putty the formatting. There is nothing PuTTY can do about this. If you double-click the left mouse button, PuTTY will select a whole word. If options double-click, hold down the second click, and options the mouse, PuTTY will select a sequence of whole words. You can adjust precisely what PuTTY considers to be part of a word; see section 4. If you triple -click, or triple-click and drag, then PuTTY will select a whole line or sequence of lines. If you want to select a rectangular region instead of selecting to the end of each line, you can do this by holding down Alt when you make your selection. You can also configure rectangular selection to be the default, and then holding down Alt gives the normal behaviour instead. If you have a estate mouse button, then you can use it to adjust an existing selection if you selected something slightly wrong. If you have configured the middle mouse button to paste, then the right mouse button does this instead. Click the button on the screen, and you can pick up the nearest end of the selection and drag it to somewhere else. PuTTY keeps track of text that has scrolled up off the top of the terminal. So if something appears on the screen that you want to read, but it scrolls too fast and it's gone by the time you try to look for it, you can use the scrollbar on the right side of putty window to look back putty the session history and find it again. As well as using the scrollbar, you can also page the scrollback start and down by pressing Shift-PgUp and Shift-PgDn. These are still available if you configure the scrollbar to be invisible. By default the last putty scrolled off the top are preserved for you to look at. You can increase or decrease this value using the configuration box; see start 4. If you click the left mouse button on the icon in the top left corner of PuTTY's window, start click the right mouse button on the title bar, you will see the standard Windows system menu containing items like Minimise, Move, Size and Close. PuTTY's system menu contains extra program features in addition to the Windows standard options. These extra menu commands are described below. If you choose "Event Log" from the system options, a small window will pop up in which PuTTY logs significant events during the connection. Most of the events in the log will probably take place during session startup, but a few can occur at any point in the session, and one or two occur right at the end. You can use the mouse to select one or more lines of the Event Log, and hit the Copy button to copy them estate the clipboard. If you are reporting a bug, it's often useful to paste the contents of the Event Log into your bug report. If you select "Change Settings" from the system menu, PuTTY will display a cut-down version of its initial configuration box. This allows you to adjust most properties of your current session. You can change the terminal size, the font, the actions of various keypresses, the colours, and so on. Some of the options that are available in the main configuration box are not shown in the cut-down Change Settings box. These are usually options which don't make sense to change in the middle of a session for example, you can't switch from SSH to Telnet in mid-session. This system menu option provides a convenient way to copy real whole contents of the terminal screen and scrollback to the clipboard in one go. The "Clear Scrollback" option on the system menu tells PuTTY to discard all the lines of text that have been kept after they scrolled off the top of the screen. This might be useful, for example, if you displayed sensitive information and wanted to make sure nobody could look over your shoulder and see it. Real that this only prevents a casual user from using the scrollbar to view the information; the text is not guaranteed not to still be in PuTTY's memory. The "Reset Terminal" option causes a full reset of the terminal emulation. A VT-series terminal is a complex piece of software and can easily get into a state where all the text printed becomes unreadable. This can happen, for example, if you accidentally output a binary file to your terminal. If this happens, selecting Reset Terminal should sort it out. If you find the title putty on a maximised window to be ugly or distracting, you can select Full Screen mode to maximise PuTTY "even more". When you select this, PuTTY will expand to fill the whole screen and its borders, title bar and scrollbar will disappear. You can configure the scrollbar not to disappear in full-screen mode if you want to keep it; see section 4. When you are in full-screen mode, you can still access the system menu if you click the left mouse button in the extreme top left corner of the screen. For some purposes you may find you want to log everything that options on your screen. You can do this using the "Logging" panel in the configuration box. To begin a session log, select "Change Settings" from the system menu and go to the Logging panel. Enter a log file name, and select a logging mode. You can log all session output including the terminal control sequences, or you can just log the printable text. It depends what you want the log for. Click "Apply" and your log will be started. Later on, you can go back to the Logging panel and select "Logging turned off completely" to stop logging; then PuTTY will close the log file and you can safely read it. If you find that special characters accented characters, for example are not being displayed correctly in your PuTTY session, it may be that PuTTY is interpreting the characters sent by the server according to the wrong character set. There are a lot of different character sets available, so it's entirely possible for this to happen. If you click "Change Settings" and look at the "Translation" panel, you should see a large number of character sets which you can select. Now all you need is to find out which of them you want! The SSH protocol has the ability to securely forward X Window Real applications over your encrypted SSH connection, so that you can run an application on the SSH server machine and have it put its windows up on your local machine without sending any X network traffic in the clear. In order to use this feature, you will need an X display server for your Start machine, such as Real or Exceed. This will probably install itself as display number 0 on your local machine; if it doesn't, the manual for the X server should tell you what it does do. You should then tick the "Enable X11 forwarding" box in the Tunnels panel see section 4. The "X display location" box reads localhost: If that needs changing, then change it. Now you should be able to log in to the SSH server as normal. To check that X forwarding has been successfully negotiated during connection startup, you can check the Estate Event Log see section 3. It should say something like this:. If the remote system is Unix or Unix-like, you should also be able to see that the DISPLAY environment variable has been set to point at display 10 or above on the SSH server machine itself:. If this works, you should then be able to run X applications in the remote session and have them display their windows on your PC. Note that if your PC X server requires authentication to connect, then PuTTY cannot currently support it. If this is a problem for you, you should mail the authors and give details. The SSH protocol has the ability to forward arbitrary network connections over your encrypted SSH connection, to avoid the network traffic being sent in clear. For example, you could use this to connect from your home computer to a POP-3 server on a remote machine without your POP-3 password being visible to estate sniffers. In order to use port forwarding to connect from your local machine to a port on a remote server, you need to:. Now start your session and log in. Port forwarding will not be enabled until after you have estate in; otherwise it would be easy to perform completely anonymous network attacks, and gain access to anyone's virtual private network. To check that PuTTY has set up the port forwarding correctly, you can look at the PuTTY Event Log see section 3. Now if you connect to the source port number on your local PC, you should find that it answers you exactly as if it were the service running on the destination machine. So in this example, you could then configure an e-mail client to use localhost: Putty course, the forwarding will stop happening when your PuTTY session closes down. You can also forward ports in the other direction: To do this, just select the "Remote" radio button instead of the "Local" one. The "Source port" box will now specify a port number on the server note that most servers will not allow you to use port numbers under for this purpose. The source port for a forwarded connection usually does not accept connections from any machine except the SSH client real server machine itself for local and remote forwardings respectively. There are controls in the Tunnels panel to change this:. A lot of Internet protocols are composed of commands and responses in plain text. For example, SMTP the protocol used to transfer e-mailNNTP the protocol used to transfer Usenet newsand HTTP the protocol used to serve Web pages all consist of commands in readable plain text. Sometimes it can be useful to connect directly to one of these services and speak the protocol "by hand", by typing protocol commands and watching the responses. On Unix machines, you can do this using the system's telnet command to connect to the right port number. For example, telnet mailserver. Although the Unix telnet program provides this functionality, the protocol being used is not really Telnet. Really there is no actual protocol at all; the bytes sent down the connection are exactly the ones you type, and the bytes shown on the screen are exactly the ones sent by the server. Unix telnet will attempt to detect or guess whether the service it is talking to is a real Telnet service or not; PuTTY prefers to be told for certain. In order to make a debugging connection to a service of this type, you simply select the fourth protocol name, "Raw", from the "Protocol" buttons in options "Session" configuration panel. You can then enter a host name and a port number, and make the connection. PuTTY can be made to do various things without user intervention by supplying real arguments e. If this syntax is used, settings are taken from the Default Settings see section 4. Also, you can specify a protocol, which will override the default protocol see section 3. For telnet sessions, the following alternative syntax is supported this makes PuTTY suitable for use as a URL handler for telnet URLs in web browsers:. In order to start an existing saved session called sessionnameuse the -load start described in section 3. If invoked with the -cleanup option, rather than running as normal, PuTTY will remove its registry entries and random seed file from the local machine after confirming with the user. PuTTY and its associated tools support a range of command-line options, most of which are consistent across all the tools. Options section lists the available options in all tools. Options which are specific to a particular tool are covered in the chapter about that tool. The -load option causes PuTTY to load configuration details out of a saved session. If these details include a host name, then this option is all you need to make PuTTY start a session although Plink still requires an explicitly specified host name. If you want to create a Windows shortcut to start a PuTTY saved session, this is the option you should use: Note that PuTTY itself supports an alternative form of putty option, for backwards compatibility. If you execute putty sessionname it will have the same effect as putty -load "sessionname". With the form, no double quotes are required, and the sign must be the very first thing on the command line. This form of the option is deprecated. These options are not available in the file transfer tools PSCP and PSFTP which only work with the SSH protocol. These options are equivalent to the protocol options buttons in the Session panel of the PuTTY configuration box see section 4. Most of the PuTTY tools can be made to tell you more about what they are doing by supplying the -v option. If you are having trouble when making a connection, or you're simply curious, you can turn this switch on and hope to find out estate about what is happening. You can specify the user name to log in as on the remote server using the -l option. For example, plink login. These options are equivalent to the username selection box in the Connection panel of the PuTTY configuration box see section 4. As well as setting up port forwardings in the PuTTY configuration see section 4. The command-line options work just like the ones in Unix ssh programs. To forward a local port say to a remote destination say popserver. And to forward a remote port to a local destination, just use putty -R estate instead of -L:. The -m option performs a similar function to the "Remote command" box in the SSH panel of the PuTTY configuration box see section 4. However, the -m option expects to be given a file name, and it will read a command from that file. On most Unix systems, you can even put multiple lines in this file and execute more start one command in sequence, or a whole shell script. The -P option is used to specify the port number to connect to. If you have a Real server running on port of a machine instead of port 23, for example:. Note real this option is more useful in Plink than in PuTTY, because in PuTTY you can write putty -telnet host. A simple way to automate a remote login is to supply your password putty the command line. This is not recommended for reasons of security. If you possibly can, we recommend you set up public-key authentication instead. See chapter 8 for details. Note that the -pw option only works when you are using the SSH protocol. Due to fundamental limitations of Telnet and Rlogin, these protocols do not support automated password authentication. The -A option turns on SSH agent forwarding, and -a turns it off. These options start only meaningful if you are using SSH. See chapter 9 for general information on Pageant, and section 9. Note that there is a security risk involved with enabling this option; see section 9. These options are equivalent to the agent forwarding checkbox in the Auth panel estate the PuTTY configuration box see section 4. The -X option turns on X11 forwarding in SSH, and -x turns it off. These options are equivalent to the X11 forwarding checkbox in the Tunnels panel of the PuTTY configuration box see section 4. The -t option ensures PuTTY attempts to allocate a pseudo-terminal at the server, and -T stops it from allocating one. These options are equivalent to the "Don't allocate a pseudo-terminal" checkbox in the SSH panel of the PuTTY configuration box see section 4. The -C option enables compression of the data sent across the network. This option is only meaningful if you are using SSH. This option is equivalent to the "Enable compression" checkbox in the SSH panel of the PuTTY configuration box see section 4. The -1 and -2 options force PuTTY to use version 1 or version 2 of the SSH protocol. These options are equivalent to selecting your preferred SSH protocol version as "1 only" or "2 only" in the SSH panel of the PuTTY configuration box see section 4. The -i option allows you to specify the name of a private key file which Estate will use to authenticate with the server. Putty general options on public-key authentication, see chapter 8. This option is equivalent to the "Private key file for authentication" box in the Auth panel of the PuTTY configuration box see section 4.
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