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Full Discussion: need to read 3° character from a text file
Top Forums UNIX for Dummies Questions & Answers need to read 3° character from a text file Post 79072 by Unbeliever on Monday 25th of July 2005 09:34:15 AM
Old 07-25-2005
sed and awk wont work if the character you've got isn't on the first line of the file.

If you have GNU text utiliities installed you can do it using the versions tail and head in the distribution.

head -c 4 yourfile.txt | tail -c 1

If you wanted the 4th charcter for example. However this counts carriage returns and spaces as characters. If you want to ignore spaces and/or carraige returns you can do it but its a little more complicated.

It would be easy if you have access to perl:

cat youfile.txt | perl -e 'read(STDIN,$data,4); print substr($data,-1);'

again gives your the 4th character.

Sean
 

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LEARN ABOUT ULTRIX

dwtcstextreplace

DwtCSTextReplace(3Dwt)													    DwtCSTextReplace(3Dwt)

Name
       DwtCSTextReplace - Replaces a portion of the current text in the compound-string text widget or inserts some new text into the current text
       of the compound-string text widget.

Syntax
       void DwtCSTextReplace(widget, from_pos, to_pos, value)
	    Widget widget;
	    int from_pos, to_pos;
	    DwtCompString value;

Arguments
       widget	 Specifies the ID of the compound-string text widget.

       from_pos  Specifies the first character position of the compound-string text being replaced.

       to_pos	 Specifies the last character position of the compound-string text being replaced.

       value	 Specifies the text to replace part of the current text in the compound-string text widget.

Description
       The DwtCSTextReplace function replaces part of the text in the compound-string text widget.  Within  the  widget,  positions  are  numbered
       starting  at  0 and increasing sequentially.  For example, to replace the second and third characters in the text, from_pos should be 1 and
       to_pos should be 3.  To insert text after the fourth character, from_pos and to_pos should both be 4.

See Also
       DwtCSText(3Dwt), DwtCSTextCreate(3Dwt), DwtCSTextSetString(3Dwt),  DwtCSTextGetEditable(3Dwt),  DwtCSTextSetEditable(3Dwt),  DwtCS-
       TextGetMaxLength(3Dwt), DwtCSTextSetMaxLength(3Dwt), DwtCSTextSetSelection(3Dwt), DwtCSTextGetSelection(3Dwt)
       Guide to the XUI Toolkit: C Language Binding
       Guide to the XUI Toolkit Intrinsics: C Language Binding

															    DwtCSTextReplace(3Dwt)
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