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Shell Programming and Scripting

Replace string and delete extra characters

 
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Old 08-28-2003
Replace string and delete extra characters
Hopefully someone can help out here. This is probably fairly basic, but I've searched and tried several variations of the solutions presented in these forums, so I'll go ahead and ask.

How can I locate a string in a file, delete the characters after the string and then replace the string with a new string?

Currently I have this, which is getting me close to a solution, but I can't get the extra characters removed:

for file in test_program; do

sed 's/OUTPUT='/'OUTPUT='$file/g $file > new_$file

done

Here is the test_program file that I am testing with:

This is a test
This is a test
/OUTPUT=("This is a test")
This is a test

Here are the results after running my script:

This is a test
This is a test
/OUTPUT=test_program("This is a test")
This is a test

I just need to have the script get rid of ("This is a test") and it will work fine for what I am trying to do, which is make this change to several thousand files at one time. Any assistance would be appreciated. I've got other ways to do this, but now that I've embarked down the Unix path, I want to see how this is done.
 
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LEARN ABOUT OPENSOLARIS

typeahead

typeahead(3XCURSES)					  X/Open Curses Library Functions				       typeahead(3XCURSES)

NAME

       typeahead - check for type-ahead characters

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include  -L	/usr/xpg4/lib 
	-R  /usr/xpg4/lib  -lcurses  [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int typeahead(int fd);

PARAMETERS

       fd    Is the file descriptor that is used to check for type-ahead characters.

DESCRIPTION

       The typeahead() function specifies the file descriptor (fd) to use to check for type-ahead characters (characters typed by the user but not
       yet  processed by X/Open Curses).

       X/Open Curses checks for type-ahead characters periodically while updating the screen.  If characters are  found,  the  current	update	is
       postponed  until  the  next  refresh(3XCURSES) or doupdate(3XCURSES). This speeds up response to commands that have been typed ahead.  Nor-
       mally, the input file pointer passed to newterm(3XCURSES), or stdin  in the case of initscr(3XCURSES), is used for type-ahead checking.

       If fd is -1, no type-ahead checking is done.

RETURN VALUES

       On success, the typeahead() function returns OK. Otherwise, it returns ERR.

ERRORS

       None.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       doupdate(3XCURSES), getch(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5)

SunOS 5.11							    5 Jun 2002						       typeahead(3XCURSES)