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Top Forums Shell Programming and Scripting Include white spaces while using CUT command Post 302425428 by Sekar1 on Friday 28th of May 2010 01:15:29 AM
Old 05-28-2010
Many thanks for explaining. Please let me know how the below SED command works. What is the use in specifying 1?

sed 's/.*<college>\(.*\) <\/college>$/\1/'

---------- Post updated at 10:35 AM ---------- Previous update was at 10:32 AM ----------

Also please explain me, whether the SED command alone works and prints the above desired output in the file? Is it not necessary to read the file line by line?
Please provide me optimal solution. Thanks in advance.

---------- Post updated at 10:45 AM ---------- Previous update was at 10:35 AM ----------

Seems to be the above script is working if the college tag is present in the first line of source file.
If my source file as below format

Code:
$ cat source.txt
<Record><sno>1</sno><empid>E0001</empid><name>Rejsh   suderam</name><college>IIT                    Chennai   </college>
<Record><sno>1</sno><empid>E0001</empid><name>Rejsh   suderam</name><placeofbirth>chennai     mylapore   </placeofbirth><dateofbirth>22ndmay99</dateofbirth><college>IIT                    Chennai   </college><course>MCA</course>

and if i execute the above command,i am receiving the below output. Please correct if any small changes i need to update in the code.

Code:
$ . ./css2.sh
$ cat final.txt
IIT                    Chennai
<Record><sno>1</sno><empid>E0001</empid><name>Rejsh   suderam</name><placeofbirth>chennai     mylapore   </placeofbirth><dateofbirth>22ndmay99</dateofbirth><college>IIT                    Chennai   </college><course>MCA</course>

 

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JED(1)								   User Manuals 							    JED(1)

NAME
Jed - programmers editor SYNOPSIS
jed --version jed-script --version xjed --version jed [--secure] [--batch|--script|--help] [options] file ... jed-script [--secure] script file [script options] ... xjed [--secure] [X options] [--batch|--script|--help] [options] file ... DESCRIPTION
Jed - programmers editor Features: Color syntax highlighting. Emulation of Emacs, EDT, Wordstar, and Brief editors. Extensible in a language resembling C. Completely cus- tomizable. Editing TeX files with AUC-TeX style editing (BiBTeX support too). Folding support, and much more... For complete documentation, see GNU info files, this manual only provides brief tutorial. OPTIONS
major options --version prints the version and compiletime variables. --help prints usage information. --secure runs Jed in secure mode, e.g. you can't run any external commands with system() or run_shell_cmd(). --batch run Jed in batch mode. This is a non-interactive mode. --script this is a mode like --batch but jed does not eval the startup files. It behaves like slsh. You must give the file that should be evaluated as second argument. It's the same as calling jed-script. minor options -n do not load .jedrc file. -a 'file' load file as user configuration file instead of .jedrc. + 'n' goto line n in buffer (notice that in order to this option to take effect, if must appear before the file name in the command line, like 'jed +3 file') -g 'n' goto line n in buffer (notice that in order to this option to take effect, if must appear after the file name in the command line, like 'jed file -g 3') -l 'file' load file as S-Lang code. -f 'function' execute S-Lang function named function -s 'string' search forward for string -2 split window -i 'file' insert file into current buffer. X options xjed accapts the common options like -display, -name, -fn and -geometry. Additionaly it accepts -facesize SIZE, -fs SIZE if build with XRENDERFONT support, selects the font size SIZE. Use it with the option -fn to select a scalable font. -foreground COLOR, -fg COLOR sets the foreground color. -background COLOR, -bg COLOR sets the background color. -fgMouse COLOR, -mfg COLOR sets the foreground color of the mouse pointer. -bgMouse COLOR, -mbg COLOR sets the background color of the mouse pointer. -Iconic, -ic start iconified. -title NAME sets the window title to NAME. For more options look at xterm.c. CONFIGURATION
Emulating Other Editors JED's ability to create new functions using the S-Lang programming language as well as allowing the user to choose key bindings, makes the emulation of other editors possible. Currently, JED provides reasonable emulation of the Emacs, EDT, and Wordstar editors. Emacs Emulation Emacs Emulation is provided by the S-Lang code in emacs.sl. The basic functionality of Emacs is emulated; most Emacs users should have no problem with JED. To enable Emacs emulation in JED, make sure that the line: () = evalfile ("emacs"); is in your jed.rc (.jedrc) startup file. JED is distributed with this line already present in the default jed.rc file. EDT Emulation For EDT emulation, edt.sl must be loaded. This is accomplished by ensuring that the line: () = evalfile ("edt"); is in present in the jed.rc (.jedrc) Startup File. Wordstar Emulation wordstar.sl contains the S-Lang code for JED's Wordstar emulation. Adding the line () = evalfile ("wordstar"); to your jed.rc (.jedrc) startup file will enable JED's Wordstar emulation. RUN TIME
Status line and Windows JED supports multiple windows. Each window may contain the same buffer or different buffers. A status line is displayed immediately below each window. The status line contains information such as the JED version number, the buffer name, mode, etc. Please beware of the fol- lowing indicators: ** buffer has been modified since last save. %% buffer is read only. m Mark set indicator. This means a region is being defined. d File changed on disk indicator. This indicates that the file associated with the buffer is newer than the buffer itself. s spot pushed indicator. + Undo is enabled for the buffer. [Narrow] Buffer is narrowed to a region of LINES. [Macro] A macro is being defined. Mini-Buffer. The Mini-Buffer consists of a single line located at the bottom of the screen. Much of the dialog between the user and JED takes place in this buffer. For example, when you search for a string, JED will prompt you for the string in the Mini-Buffer. The Mini-Buffer also provides a direct link to the S-Lang interpreter. To access the interpreter, press Ctrl-X Esc and the S-Lang> prompt will appear in the Mini-Buffer. Enter any valid S-Lang expression for evaluation by the interpreter. It is possible to recall data previously entered into the Mini-Buffer by using the up and down arrow keys. This makes it possible to use and edit previous expressions in a convenient and efficient manner. Basic Editing Editing with JED is pretty easy - most keys simply insert themselves. Movement around the buffer is usually done using the arrow keys or page up and page down keys. If edt.sl is loaded, the keypads on VTxxx terminals function as well. Here, only the highlights are touched upon (cut/paste operations are not considered `highlights'). In the following, any character prefixed by the ^ character denotes a Control character. On keyboards without an explicit Escape key, Ctrl-[ will most likely generate and Escape character. A prefix argument to a command may be generated by first hitting the Esc key, then entering the number followed by pressing the desired key. Normally, the prefix argument is used simply for repetition. For example, to move to the right 40 characters, one would press Esc 4 0 followed immediately by the right arrow key. This illustrates the use of the repeat argument for repetition. However, the prefix argu- ment may be used in other ways as well. For example, to begin defining a region, one would press the Ctrl-@ key. This sets the mark and begins highlighting. Pressing the Ctrl-@ key with a prefix argument will abort the act of defining the region and to pop the mark. The following list of useful keybindings assumes that emacs.sl has been loaded. Ctrl-L Redraw screen. Ctrl-_ Undo (Control-underscore, also Ctrl-X u'). Esc q Reformat paragraph (wrap mode). Used with a prefix argument. will justify the paragraph as well. Esc n narrow paragraph (wrap mode). Used with a prefix argument will justify the paragraph as well. Esc ; Make Language comment (Fortran and C) Esc Trim whitespace around point Esc ! Execute shell command Esc $ Ispell word Ctrl-X ? Show line/column information. ` quoted_insert --- insert next char as is (backquote key) Esc s Center line. Esc u Upcase word. Esc d Downcase word. Esc c Capitalize word. Esc x Get M-x minibuffer prompt with command completion Ctrl-X Ctrl-B pop up a list of buffers Ctrl-X Ctrl-C exit JED Ctrl-X 0 Delete Current Window Ctrl-X 1 One Window. Ctrl-X 2 Split Window. Ctrl-X o Other window. Ctrl-X b switch to buffer Ctrl-X k kill buffer Ctrl-X s save some buffers Ctrl-X Esc Get "S-Lang>" prompt for interface to the S-Lang interpreter. Esc . Find tag Ctrl-@ Set Mark (Begin defining a region). Used with a prefix argument aborts the act of defining the region and pops the Mark. FILES
JED_ROOT/lib/*.sl these are the default runtime jed slang files (packages like jed-extra can define additional slang library directories) JED_ROOT/lib/site.sl This is the default startup file. /etc/jed.d/*.sl The system wide configuration files (this is a special Debian feature). ~/.jedrc Per user configuration file, or ~/.jed/jed.rc per user configuration file if the Jed_Home_Directory ~/.jed/ exists. AUTHOR
John E. Davis <davis@space.mit.edu> Jed's Author --- This document was translated to nroff by "Boris D. Beletsky" <borik@isracom.co.il> Debian OCT 1996 JED(1)
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