Remove box like special character from end of string Post: 302282984

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Top Forums Shell Programming and Scripting Remove box like special character from end of string Post 302282984 by quirkasaurus on Monday 2nd of February 2009 10:13:48 AM

02-02-2009

Registered User

Quote:

Originally Posted by Qwerty123

Hi,

My requirement is that I store this string in suppose say $string...and compare it with a parameter that is input say $param ...
like

if [ $string = $param ]
then
echo 'True'
else
echo 'False'
fi

This $string is part of header (i.e another big string) which can be treated as a record (line) and this $string appears at the end of line. I fetch it based on positions...for ex: 30 to 60. In case the $string is of length 10 only, 11th character i.e, at position 41 there'll be this box like character (since I'm fetching 30 to 60 into $string). This character doesn't get trimmed. And since this box like character is present my comparision returns 'False' even when it's 'True'.

I have tried things like

string=`echo $string|tr -d '\n'`
and \t, \r, \222,\221---Ascii equivalents...and all that and then thought its not Ascii at all.

Still I couldn't solve this. Please help Smilie

Well, read the file using:

Code:

sed -e 's/[^ -~]//g'

For sure, that'll remove the non-ascii boxes.
Then your comparisons will work.

quirkasaurus

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xmtextfindstring

XmTextFindString(library call)											    XmTextFindString(library call)

NAME

       XmTextFindString -- A Text function that finds the beginning position of a text string

SYNOPSIS

       #include <Xm/Xm.h>
       Boolean XmTextFindString(
       Widget widget,
       XmTextPosition start,
       char *string,
       XmTextDirection direction,
       XmTextPosition *position);

DESCRIPTION

       XmTextFindString  locates the beginning position of a specified text string. This routine searches forward or backward for the first occur-
       rence of the string starting from the given start position.  If it finds a match, the function returns the position of the first  character
       of the string in position.  If the match string begins at the current position, this routine returns the current position.

       widget	 Specifies the Text widget ID.

       start	 Specifies  the  character  position from which the search proceeds. This is an integer number of characters from the beginning of
		 the text buffer. The first character position is 0 (zero).

       string	 Specifies the search string.

       direction Indicates the search direction. It is relative to the primary direction of the text. The possible values are

		 XmTEXT_FORWARD
			   The search proceeds toward the end of the text buffer.

		 XmTEXT_BACKWARD
			   The search proceeds toward the beginning of the text buffer.

       position  Specifies the pointer in which the first character position of the string match is returned. This is an integer number of charac-
		 ters  from  the  beginning  of the buffer. The first character position is 0 (zero). If the function returns False, this value is
		 undefined.

       For a complete definition of Text and its associated resources, see XmText(3).

RETURN

       Returns True if a string match is found; otherwise, returns False.

RELATED

       XmText(3) and XmTextFindStringWcs(3).

														    XmTextFindString(library call)