2.2 Using the workstation

The way that a workstation behaves is a function of the type of workstation, the computer operating system, the window manager program, and the set-up files for the specific computer account being used. Given all these variables, it is hard to give detailed usage instructions. Nonetheless, it is important for beginning users to master the foibles of the workstation(s) they will be using.

2.2.1 Logging in to the workstation

Find your assigned computer in the appropriate AIPS caige or office, or an available one intended for general use (checking any sign-up sheets for it). Typing  C R on the keyboard will reveal the current state of the workstation. If you see a message prompting you to log in (e.g.AOC RedHat Linux, [monkey] login on a Socorro Linux workstation named monkey), then the computer is ready for you to log on. Type the account name you are supposed to use for AIPS followed by a  C R (use Tab in forms) and then type the password (it will not be visible on the screen) followed by another  C R. See your AIPS Manager for the account to use and its password (which should change with time). Many sites will assign an account to you personally, while some use a more generic AIPS account. The login scripts should start the window system automatically and produce one or more xterm or aixterm windows that you can use for starting AIPS.

If the initial  C R produces instead a set of windows (and/or icons), the computer is already being used. If these windows include the AIPS TV and possibly the TEKSRV and MSGSRV server windows, it is being used for AIPS. Check with other possible users before proceeding. If it’s okay to use the system, you should log the previous user out and log in for yourself, restarting the window system. If you are patient, you can open each iconified window (by clicking on it once or twice), see what it’s doing and finish up and/or exit. If the prompt is > in any text window, AIPS is running there and you should type: > KLEENEX  C R

which will get out of AIPS and kill the servers. Then once at the system prompt (Unix), you can type exit  C R (lowercase!) to make the window go away. If the XASAIPS TV server is still running, just press the escape key while the cursor is in the TV window. For the MSGSRV message server, move the cursor into the window and press CTRL C. Finally for the Tek server, hold the control key down while you press the left mouse button, and choose the QUIT option.

The procedure for exiting from the windowing system will depend on what window manager you use. If your system uses KDE, there will be an icon on the icon bar with a large K superimposed on a globe. If the system uses Gnome, then the magic icon is an image of a foot. Move the mouse to the icon and hold down the left button. A pull-down menu will appear; select the Logout function.

2.2.2 Control characters on the workstation

To correct characters which you have typed, you may have to press either the BackSpace key or the Delete (or DEL) key. Unfortunately, which is required varies with the application you are using and how the AIPS account (or your personal account) has been set up. For details, see the manual page on stty with particular note of the erase function.

A control character is produced by holding down the CTRL (or Control) key while hitting another key. Some control characters under Unix have characteristics that may confuse users more used to other environments (VMS, MS-DOS). In particular, CTRL D, CTRL T, CTRL Y and CTRL Z behave much differently under Unix than under VMS. CTRL D is used in Unix as a signal to logout, unless otherwise inhibited. If you use the AIPS accounts at either Charlottesville or the AOC, this feature is automatically disabled. While in AIPS, CTRL Ds are interpreted from the > prompt as an EXIT command. CTRL T (under GNU readline) transposes two characters, while CTRL Y inserts characters previously saved in the “kill” buffer. CTRL Z suspends the current process, printing Stopped on your window and leaving you at the Unix prompt level. The Stopped message does not mean that the process has been terminated. It simply means the process has been suspended and placed in the background. For AIPS users, the suspended process is normally AIPSn. Users who do not understand this state often start up another AIPS session. In doing so, they are tying up a second AIPS number. If a user does this enough times, s/he can eventually tie up all available AIPSn’s. If you are unfamiliar with the use of CTRL Z (suspend) in Unix systems, it’s best not to use them from AIPS, unless expert advice is close at hand. With an X-Window display, it is preferable to pop up a new xterm or other window and do whatever you want in it, leaving the AIPS session undisturbed. (You can get a new xterm, usually, by moving the cursor into the root (background) window, pressing the right mouse button, and selecting the appropriate option.) If you have suspended the current process (usually AIPS) with CTRL Z to get to monitor level (for instance, to edit a RUN file), then you can bring the suspended process back into the foreground with the command fg  C R.

To abort any execution in your window, type CTRL C. Using CTRL C while in AIPS will unceremoniously eject you to the Unix prompt. You will have to restart AIPS with all the input parameters having been lost. In some cases, any AIPS tasks running in the background, and maybe even the TV and other servers, will also be “killed” and will disappear from the screen. Aborting AIPS “tasks” (sub-processes) is usually done from within AIPS with the command ABORT taskname  C R (see 3.1.2) rather than with CTRL C’s or Unix-level system commands. Not only does this avoid killing AIPS, but it even allows for orderly deletion of scratch files.

During execution, scrolling of output lines out of the window can be halted by typing CTRL S and resumed by typing CTRL Q. If you are using an xterm (or cmdtool or aixterm) window with a scroll bar, you probably won’t have to worry too much about doing this; use the scroll bar to review lines which have rolled off the visible part of the window. You can specify how many lines these terminal emulator windows remember, e.g., for xterm with the -ls option or with the X resource xterm*saveLines (in your .Xdefaults or .Xresources file).

2.2.3 Starting the AIPS program

As you enter the commands needed to log in to your system and start AIPS, please read all messages which appear. They are often important and relate to current system, disk, and AIPS problems which may affect your reductions.

To begin AIPS, enter

%  aips  C R

with no options initially

You will then be shown a list of printer devices and be prompted to Enter your choice:. You will then be told about the assigned printer queue and data disks. If all is going well it will then tell you You seem to be at a workstation called monkey Starting local TV servers on monkey

where monkey is the name of your workstation. Any news messages about your AIPS installation will then appear. Read them; they might be important. Finally, you should see the messages: Starting up 31DEC24 AIPS with normal priority BEGIN THE ONE TRUE AIPS NUMBER n (release of 31DEC24) at priority 0

where 31DEC24 identifies the release of AIPS and n is a number between 1 and 6 (typically). If this is the only AIPS session on the computer, you should be assigned n = 1, with higher numbers used for additional sessions. If you start with n > 1, someone else may be using your computer remotely. AIPS will then tell which TV and graphics devices have been assigned to you: AIPS n: You are assigned TV device nn AIPS n: You are assigned graphics device mm

where nn and mm are numbers assigned to your workstation (or, rarely now, to real TV and graphics devices). AIPS will now ask you for your user number and provide a ? prompt: AIPS n: Enter user ID number ? uuuu  C R

where uuuu is the number assigned to you for the local AIPS system (in decimal form). The AIPS prompt > should now appear.

There is more. Notice the line above that says “starting local TV servers on monkey”? At that point, the process of figuring out what computer you’re running on and what display you’re sitting at (they may be different) is shed in an asynchronous way while the main process of starting the AIPS program proceeds. Then, sometime later, you will see the following messages appear in the same window: XASERVERS: Start TV LOCK daemon TVSERV on monkey TVSERVER: Starting AIPS TV locking, Inet domain XASERVERS: Start XAS on monkey, DISPLAY monkey:0 XAS: ** TrueColor FOUND!!! XAS: *** Using shared memory option for speed *** XAS: Using screen width height 2540 1920 max grey level 8191 in 16 grey-scale memories characters multiplied by 2 XASERVERS: Start graphics server TEKSRV on monkey, DISPLAY monkey:0 XASERVERS: Start message server MSGSRV on monkey, DISPLAY monkey:0

Each of the first four messages should announce the starting of one of the servers. The Tek server will appear in iconified form somewhere on the screen, while the message server will appear opened (not iconified) somewhere else. Finally, the XAS TV server appears in opened form. An environment variable can be set to have the Tek server appear in open form and a .Xdefaults (or .Xresources) file option may be set to have the TV appear in iconified form. If your X-Windows supports 24-bit TrueColor, then XAS will use it. Otherwise, XAS will use 8-bit PseudoColor which is faster but less flexible. In this case, if you have a lot of colors in your X11 display (e.g., an image on the root window displayed with xv), you may also get the message: XAS: Using screen width height 1142 800, max grey level 189 XAS: Warning -- creating virtual colormap

which means XAS wasn’t able to find enough free colors in the main colormap (189 in the above example) and had to create its own. In this case, the colors of every other window will “flash” when you move the mouse cursor into the opened XAS TV window, and vice versa. You can use xsetroot -solid navy command (or other legal X colors) to blank out whatever is on the root window; then restarting AIPS will restart the TV server, hopefully without a virtual colormap. There are a number of X-Window parameters which may be specified in your .Xdefaults or .Xresources file for these three windows. After AIPS begins, type HELP XAS  C R, HELP MSGSRV  C R, and HELP TEKSRV  C R for details. Among these is a parameter controlling how many colors XAS tries to use in PseudoColor and whether it tries to use TrueColor or not. Character size multiplication occurs by default when you have a large number of pixels on your screen. It can be controlled by an .Xresources parameter and the AIPS verb CHARMULT. See 2.3.2 for more information about XAS.

There are several options you can use in starting up AIPS. To see them, just enter man aips at the Unix command prompt, or if you are already in AIPS, type HELP AIPS  C R. This information is reproduced in part below:

       aips [OLD, NEW, or TST]  
         or [TV=local[:n]]  
         or [TV=inet]  
         or [NOTV]  
         or [DA=default]  
         or [DA=all]  
            [REMOTE or REM or TEK]  
            [LOCAL] [NORL] [NOEX]  
       The aips or AIPS command starts up the AIPS command interpreter and  
       associated AIPS server processes.  
       All command line options are case insensitive.  
       AIPS allows up to three versions to co-exist (disk space permitting) in one  
       installation.  They are identified either by date (e.g. 31DEC24) or name  
       (OLD, NEW, or TST).  On most installations, these will all be the same.  
       OLD     Start the OLD version of AIPS.  For NRAO this is a frozen version  
               which has been distributed worldwide.  Serious bugs are rarely  
       NEW     Start the NEW version of AIPS.  For NRAO this is the most recently  
               released version and is "frozen" at the date in its name.  
               Serious bugs are corrected over the next year.  
       tst     Start the TST version of AIPS.  For NRAO this is the development  
               version which is also available to non-NRAO sites.  This is the  
       TV=[tvdisp][:][tvhost] or TV=local[:n] or TV=inet  
               The default TV display server is now (31DEC24) TV=local:0.  
               TV display server to use instead of the default.  The AIPS startup  
               script tries to deduce which host the user is sitting in front of  
               (this may not work; it is often difficult or impossible to determine  
               this  information).  This may not be the same as the machine on which  
               AIPS is to be run if, for example, the user has remotely logged in to  
               another machine within a terminal emulator window.  
               The  "TV=local" option allows use of Unix based sockets for the TV and  
               other servers.  If you choose this option, you MUST run the XAS server  
               and any AIPS sessions that will use it on the same host, though the  
               DISPLAYs can be the same or different.  Also, no remote AIPS sessions  
               will be able to talk to this local TV.  
               If you instead use "TV=local:0", it will attempt to start a new  
               instance of the TV and ancillary servers.  This can be used to have  
               multiple TV’s on the same host, and is useful in a compute server  
               environment with X terminals.  If you have multiple Unix-socket based  
               TV’s already started, you can choose which one a new AIPS session will  
               use by, e.g. "TV=local:2" to choose the second one.  Note that the  
               n in ‘‘TV=local:n’’ is in extended HEX or 0 to 9, A to Z.  
               NOTE: The default TV behavior is no longer to use internet  
               based sockets.  Such use is mostly when more than one  
               computer must talk to the same incarnation of XAS, which is  
               an uncommon usage.  Internet sockets also require compatible  
               entries in the system file /etc/services.  
               For the use of internet sockets, the full syntax of the TV= option  
               is TV=tvdisp:tvhost, where tvhost is the name of the machine on which  
               the TV display server (usually XAS), Tektronix  graphics  server  
               (TEKSRV), message server (MSGSRV), and TV Lock server (TVSERV) are to  
               run, and tvdisp indicates the machine to which the DISPLAY environment  
               variable should point for XAS.  Do NOT specify TV=hostname:0.0!  Both  
               TVHOST and TVDISP can be different from the machine that AIPS itself  
               is running on.  See the section on X Window System servers below for  
               more information on how to control the servers.  
               The default behavior of this option  if only one of tvdisp and  tvhost  
               is specified is  
               TV=tvhost   tvdisp defaults to tvhost.  
               TV=tvdisp:  tvhost defaults to the host AIPS is running on.  
               TV=:tvhost  tvdisp defaults to the host AIPS is running on.  
               For  the remote TV options to work, you must be able to use the rsh or  
               remsh command; see the notes on it under the tp= heading below.   Also  
               see  the notes on environment variable AIPSREMOTE.  By default, if you  
               do not specify any tv= option, you will only get a TV if your  current  
               TERM  environment  variable matches sun*, *xterm*, *hpterm, dtterm, or  
               iris*.  The DISPLAY environment variable is used if set, otherwise the  
               who  am  i  (on  HP-UX, with the -R option) is used to make a guess at  
               "where" you really are.  
       NOTV    Prevents automatic activation of the TV server if no display is  
               wanted.   This option also disables the Tektronix graphics server, the  
               message server and the TV lock server.  See the section on X  Window  
               System  servers below for information on how to control the Tektronix  
               and message servers.  
       TVOK    Assume that the TV display servers are already running; the particulars  
               (display, host) are still worked out -- from the TV=... argument  
               (see above) if necessary -- but no servers will be started.  
       DA=host[,host,...] or DA=default or DA=all  
               Select user data areas (directories, or "disks" in AIPSpeak) that  are  
               local to the (comma separated) list of machines.  Data areas from  
               "required" hosts and those on the local machine are always added,  
               regardless of the list of hosts.  
               All disks from each named host will be assigned.  Use the FREE command  
               within AIPS to see the disk assignments you end up with.  They are  
               also shown on startup.  
               AIPS has a limit of 35 disks in any one session.  The limit on the  
               number of disks that can be defined for any given site is 512.  Disk 1  
               is special in that it stores the AIPS message and save/get files.  The  
               system is designed so that one particular required disk will almost  
               always be assigned as disk 1.  For performance reasons, this may be  
               undesirable if the filesystem in question is mounted via NFS.  See the  
               description of personal .dadevs files below, as it can be used to cus-  
               tomize the list of possible user data areas.  
               Selecting DA=ALL will try to include every area defined in the startup  
               file, up to the session limit.  Bear in mind that most AIPS tasks only  
               have 10 slots for "BADDISK".   Selecting DA=DEFAULT will completely  
               bypass the configurable data areas and choose only those data areas  
               pre-configured by the AIPS manager; THIS IS NOT NORMALLY ENABLED, CHECK  
               There is a hierarchy of data area "lists" that AIPS will look for on  
               startup.  These are:  
               $HOME/.dadevs       This would be in your private login area (what  
                                   $HOME points to).   It need not exist.  If it  
                                   doesn’t, AIPS looks for the next file:  
               $DA00/DADEVS.LIST   This is a host-specific file possibly set up by  
                                   the AIPS manager.  If it doesn’t exist, AIPS  
                                   finally looks for:  
               $NET0/DADEVS.LIST   which is the site-wide data area configuration  
               The  normal state of affairs is to have just one place for disks to be  
               defined, namely $NET0/DADEVS.LIST.  Your AIPS manager can choose to  
               install host-specific list files, and you can choose (if you run AIPS  
               from your own private account) to override both of these two with your  
               own private  version.   This  allows for considerable flexibility but  
               moves the onus of maintenance of these files to the  user.   In other  
               words,  if  you  have your own .dadevs file, you have to keep track of  
               your site’s disk configuration!  
               If your AIPS installation supports multiple  sites,  e.g.  to support  
               both little-endian (Intel, Mac) and big-endian (Sparc) systems, you  
               can have any of these files refer to one or the othe site by appending  
               the site name, e.g. $HOME/.dadevs.VCOARN for SITE=VCOARN.  
               The  format for these files is all the same: a list of directory names  
               preceded by a "+" for required or a "-" for optional.  There should be  
               two (2) spaces between the "+" or "-" (in the leftmost column) and the  
               directory name.  
               In addition to all of the above,  you may define a list of  data areas  
               in an optional $HOME/.dadevs.always file.  This is used in addition to  
               whichever of the DADEVS files have been selected by the rules above.  
               The data areas that you will be assigned  start with any required data  
               areas in the $HOME/.dadevs.always file followed by any required data  
               areas in the selected DADEVS file regardless of name.   The 3rd group  
               of data areas are those optional ones in the selected DADEVS file  
               containing a string matching the user’s host name.  Then come the  
               optional data areas in the  $HOME/.dadevs.always file regardless of  
               name.  Finally, the optional data areas in the selected  DADEVS file  
               with strings matching the names of any hosts given in the  
               DA=host[,host,...] command-line  option.  The order of data areas  
               within each group,  i.e. which is disk 1, etc.,  is determined by the  
               order in the files.  
               There is also a $NET0/NETSP file that is maintained by the AIPS manager  
               and controls aips user-number access  to the disks.  Regardless of  
               the number of sites in your installation, there is only one NETSP file.  
              Make sure tape servers are running on the comma separated list of  
              machines.  While the AIPS account is usually set up so that it can  
              perform remote shell (rsh) commands, your personal account may not.  
              Check with your system administrator or network guru for details.  
              Also check the Unix manual pages on rsh (remsh on HP-UX), rhosts, and  
              hosts.equiv.  The tp= option uses rsh to issue commands to remote hosts.  
       TPOK   Do NOT check or launch the TPMON tape daemons on the local host.  The  
              default is no longer to check or to start the tape daemons.  Therefore,  
              if you need them, use TP= above even for the current computer.  
       PR=#    Select printer number (e.g., pr=2).  If this option is not specified,  
               the user will be presented with a menu of available printers and  
               prompted to enter a choice.  If there is only one printer configured,  
               no menu will be presented.  You may change the selected printer within  
               AIPS via the PRINTER adverb.  
       REMOTE or REM or TEK  
               Any one of these indicates that the user is running from a terminal  
               with Tektronix display capability.   Graphics output will be sent  
               directly to this terminal.  NOTE: AIPS will not switch from text to  
               graphics mode on terminals with a separate graphics "screen".  
               Start AIPS in debug  mode.   With no arguments, the user will be  
               prompted for the name of the debugger (e.g. gdb, dbx, adb, csd, xde,  
               dbxtool, debugger, xxgdb) and also whether to run AIPS itself under  
               the  debugger.  If you answer no, only AIPS tasks will be run in debug  
               mode.  If =prog is specified, this suppresses the prompt for the name  
               of the debugger program.  If :aips is specified, this suppresses the  
               prompt for whether to run AIPS itself in debug mode and assumes it  
               will.   Use of both these options is useful in speeding up the startup  
               of the system when debugging a program or AIPS itself.  
       LOCAL   Start a local copy of AIPS.EXE  residing  in  the  current  directory.  
               Usually used by programmers for debugging purposes.  
       NORL    Disable  GNU  readline library and command-line editing.  This is pri-  
               marily useful for running backgrounded  AIPS  sessions,  running  AIPS  
               from "here-document" shell-scripts, and for debugging.  
       NOEX    This defers AIPS execution and is not normally used directly by users.  
       If you are running under the X Window System, AIPS will open up to three win-  
       dows: a TV window (normally XAS), a message window (MSGSRV) and a graphics  
       window (TEKSRV).  If you specify the notv option on the command line, none of  
       these will be started.  
       MSGSRV and TEKSRV are actually simple programs running inside a terminal  emu-  
       lator.   You  may use any terminal emulator that you would normally use on the  
       machine on which you are running AIPS for the MSGSRV window.  Examples include  
       xterm  (the  sample  vt100/Tektronix emulator that comes with the MIT X Window  
       System code); cmdtool and shelltool (the standard terminal emulators for Open-  
       Windows) and AIXterm (the standard terminal emulator on RS/6000s).  You can  
       choose which one to use by setting the environment variable AIPS_MSG_EMULATOR  
       to the name of the terminal emulator you wish to use.  For example, if you  
       want to use cmdtool you would type  
       setenv AIPS_MSG_EMULATOR cmdtool  
       if you use the C or TC Shell, or  
       AIPS_MSG_EMULATOR=cmdtool; export AIPS_MSG_EMULATOR  
       if you use Korn, BASH, or Bourne shells before you start up AIPS.   You  could  
       also add these  commands to your .login file (C Shell) or .profile  
       (Korn/BASH/Bourne Shells) to make the assignment more permanent.  You can also  
       give AIPS_MSG_EMULATOR the special value of "none" which will disable the mes-  
       sage window without affecting the Tektronix window or the TV.  If  
       AIPS_MSG_EMULATOR is not set, the default is xterm.  
       You may choose the terminal emulator used for the Tektronix window using the  
       environment variable AIPS_TEK_EMULATOR in the same way that you use  
       AIPS_MSG_EMULATOR to choose the terminal emulator, but it must support Tek-  
       tronix graphics codes.  On most machines the only values of AIPS_TEK_EMULATOR  
       that  make any sense are xterm and none.  If AIPS_TEK_EMULATOR is not set AIPS  
       will behave as if it were set to xterm.  (Note: dxterm, aixterm, and cmdtool  
       are not "xterm"; they cannot display Tek graphics).  
       You can set preferences for positions and colors for all three servers using  
       the standard X Window System mechanisms.   Further information is available  
       through the AIPS HELP system (subjects MSGSRV, TEKSRV, XAS and XVSS).  
       Note that AIPS expects that a terminal emulator can start a program that is  
       specified using a -e flag on the command line.  This is true of all of the  
       terminal emulators we know about but if you find one that requires a different  
       flag you can specify the flag as AIPS_TEK_EXE_FLAG or AIPS_MSG_EXE_FLAG.  
       In addition to the Message and Tek server customizations, you may choose to  
       set a variable AIPSREMOTE to indicate your choice of remote shell command.  It  
       is strongly recommended that the secure shell (ssh) be used in place of the  
       traditional Berkeley rsh or remsh command:  
              setenv AIPSREMOTE "ssh -n"  
       for csh or tcsh shells, or  
              export AIPSREMOTE="ssh -n"  
       for bash, korn, zsh and other bourne-like shells.

If you do not specify a printer (by number) on the command line when starting AIPS, you will get a menu showing you all the alternative printers available. You should omit the PR option until you are familiar with the choices. The OLD version of AIPS is likely to be relatively free of bugs (provided the AIPS version in NEW does not prescribe format changes which prevent OLD from working), but the NEW version will contain improvements and will be mostly debugged. The TST version is a debugging area recommended for NRAO staff and those few users who may require the most recent software. (Note that this choice affects only the version of the AIPS program itself. You may choose TST, NEW or OLD versions of the AIPS reduction programs at a later time — see 3.5.)

2.2.4 Typing commands to the AIPS program

As of the 15JUL95 release, AIPS is available to users under a GNU-style license. This has numerous benefits, one of which is that it allows us to incorporate other GNU-style code within our system. The first of these is the GNU readline library which provides the user-input interface for AIPS under Unix beginning with the 15JAN96 release. The GNU readline library gives the user the ability to use the cursor-arrow keys, as well as various “control” and “escape” key sequences, to recall previously-entered commands, to edit the current command line (without having to back-space and re-type the entire line), to search the command history for previously-executed commands, to define customized key bindings for executing commands and macros, and much more. The full information may be obtained with the command man readline from the system command line (not inside AIPS). There is even “tab completion” based on the list of AIPS help files and on context. At any point, when typing a symbol, you may hit the TAB key. The symbol name will be completed if it is unique or the screen will flash (or the bell sound) is it is not. A second hit on the TAB key will produce a list of the possible completions. Since a task name cannot be the first symbol on a line, tasks are included in the possible completions only after some other symbol appears on the line.

The default key bindings should be very familiar to users of emacs and/or the bash shell; many of them should also be recognizable to users of the Korn and tcsh shells. Hard-core vi users can put AIPS into “vi-mode” and use vi-like key bindings instead. (The basic emacs-like key bindings will be outlined below; it will be assumed that those who are using the non-default vi-like key bindings already know what they are doing.)

Your command-line history is automatically saved between sessions, unique to both the user number and the “AIPS number” of the session, and then recovered at the next AIPS startup.

Use of the GNU readline library for input can be disabled on a per-session basis by starting AIPS with the “norl” option. This can prevent problems under some operating systems (most notably HP/UX) with putting AIPS into the background, when running with input “fed” from a script, or when debugging AIPS itself.

The key bindings are given below. Key sequences/bindings using the CONTROL key will be prefixed below with “C-.” Those using the ESCAPE key (or “META” key — often available as the ALT key on PC keyboards and as the “diamond” key on Sun keyboards) will be prefixed with “M-.” The basic cursor-movement key bindings are:

       C-b      backward-character      [also: left-arrow]  
       C-f      forward-character       [also: right-arrow]  
       C-p      previous-command        [also: up-arrow]  
       C-n      next-command            [also: down-arrow]  
       M-b      backward-word  
       M-f      forward-word  
       C-a      beginning-of-line  
       C-e      end-of-line  
       C-r      incremental-search backward  
       C-p      previous-history (move backward in history list)  
       C-n      next-history (move forward in history list)

The basic editing key bindings are:

       C-d      delete-character (under cursor)  
       M-d      delete-word (to right of cursor)  
       M-DEL    delete-word (to left of cursor)  
       C-t      transpose-characters (left with under cursor)

DELETE and BACKSPACE work as expected.