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Top Forums Shell Programming and Scripting Extracting fixed length number from a text file Post 302994208 by Scrutinizer on Monday 20th of March 2017 11:58:32 AM
Old 03-20-2017
Hi that command will extract all 23 digit numbers from the text. The -o option is a GNU and BSD grep extension.

You do not need the perl extension.
Code:
grep  -Eo "[0-9]{23}" file

should work as well

The problem with this command is that it will also return part of numbers that are larger than 23 digits if present..

So it should be:
Code:
grep  -Eo '\<[0-9]{23}\>' file

An equivalent awk command would be:
Code:
awk '$1~/^[0-9]{23}$/{print $1}' RS=\[ FS=\] file


---
( grep -Eo '\<\d{23}\>' file will also work with BSD grep )
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DXmCreateScrolledCSText(3X)											       DXmCreateScrolledCSText(3X)

NAME
DXmCreateScrolledCSText - Creates a compound string text widget with scroll bars. SYNOPSIS
Widget DXmCreateScrolledCSText( Widget parent, char *name, Args *args, Cardinal num_args ); PARAMETERS
The identifier (widget ID) of the parent widget. The name of the created widget. The application override argument list. The number of arguments in the application override argument list. DESCRIPTION
The DXmCreateScrolledCSText routine creates a compound string text widget with scroll bars. The routine uses the same arguments and resources as the DXmCreateCSText routine to create a compound string text widget but uses the following resources to create horizontal and vertical scroll bars for the widget as well: ------------------------------------------------------------------- Resource Description ------------------------------------------------------------------- XmNscrollHorizontal Controls whether a scroll bar that allows the user to scroll through text horizontally is added to the compound string text window. XmNscrollTopSide Controls whether the horizontal scroll bar is positioned at the top of the compound string text window. XmNscrollVertical Controls whether a scroll bar that allows the user to scroll through text vertically is added to the compound string text window. XmNscrollLeftSide Controls whether the vertical scroll bar is placed on the left side of the compound string text window. ------------------------------------------------------------------- Inherited Resources The DXmCreateScrolledCSText routine inherits behaviour and resources from the following superclasses: Core Resource Set XmPrimitive Resource Set DXmScrolledCSText Resource Set RETURN VALUES
The identifier (widget ID) of the created compound string text widget. SEE ALSO
DXmCreateCSText(3X) DXmCreateScrolledCSText(3X)
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