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Full Discussion: Binary pattern matching in UNIX
Top Forums UNIX for Beginners Questions & Answers Binary pattern matching in UNIX Post 302977753 by bakunin on Thursday 21st of July 2016 06:10:22 PM
Old 07-21-2016
Quote:
Originally Posted by matthewndavies1
Conceptually this seems straightforward but I can't get it to work or find an example where you can generate a simple one-line output.
In fact it is quite simple to implement. As i sense you want to do this in sedhere is how you do it:

1 - if a match is found (in any line, including the first) output that third field (or whatever) and immediately exit sed (you can use the "q" command to do so).

2) - for the last line, put a rule as the last into the script of writing "NaN" before quitting from the script. If the script gets thee the last line didn't match either.

Here is the implementation (supposing your desired match is "BBB" and "CCC"):

Code:
sed '/^BBB CCC/ {
         s/^BBB CCC//p
         q
      }
      $$ s/.*/NaN/p' /path/to/input

I hope this helps.

bakunin
 

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LEARN ABOUT XFREE86

xcmssetcccofcolormap

XcmsCCCOfColormap(3X11) 					  XLIB FUNCTIONS					   XcmsCCCOfColormap(3X11)

NAME

       XcmsCCCOfColormap, XcmsSetCCCOfColormap - query and modify CCC of a colormap

SYNTAX

       XcmsCCC XcmsCCCOfColormap(Display *display, Colormap colormap);

       XcmsCCC XcmsSetCCCOfColormap(Display *display, Colormap colormap, XcmsCCC ccc);

ARGUMENTS

       display	 Specifies the connection to the X server.

       ccc	 Specifies the CCC.

       colormap  Specifies the colormap.

DESCRIPTION

       The XcmsCCCOfColormap function returns the CCC associated with the specified colormap.  Once obtained, the CCC attributes can be queried or
       modified.  Unless the CCC associated with the specified colormap is changed with XcmsSetCCCOfColormap, this CCC is used when the specified
       colormap is used as an argument to color functions.

       The XcmsSetCCCOfColormap function changes the CCC associated with the specified colormap.  It returns the CCC previously associated with
       the colormap.  If they are not used again in the application, CCCs should be freed by calling XcmsFreeCCC.  Several colormaps may share the
       same CCC without restriction; this includes the CCCs generated by Xlib with each colormap.  Xlib, however, creates a new CCC with each new
       colormap.

SEE ALSO

       DisplayOfCCC(3X11), XcmsConvertColors(3X11), XcmsCreateCCC(3X11), XcmsDefaultCCC(3X11), XcmsSetWhitePoint(3X11)
       Xlib - C Language X Interface

XFree86 							   Version 4.7.0					   XcmsCCCOfColormap(3X11)
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