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Full Discussion: Need help to replace a pattern on specific line in a data file
Top Forums Shell Programming and Scripting Need help to replace a pattern on specific line in a data file Post 302686413 by anuj06 on Tuesday 14th of August 2012 12:39:06 PM
Old 08-14-2012
Need help to replace a pattern on specific line in a data file
Hi,

I want to replace specific pattern "-2.0000 2" by "1.0000 3" on a particular line (line #5) in a file 1.dat. I have about 50 more files similar to 1.dat in which I want to do this correction.

Can you please suggest how can I make change only at this particular line of a file and retain remaining file as it is.

Code:
$cat 1.dat
      1     4.619209   -2.737649   16.892469  -2.0000       2      10       1
      2    -4.132976    1.244385   16.892469  -2.0000       2      10       2
      3     7.536607    3.235402   16.892469  -2.0000       2      10       3
      4    12.885178   -2.737649   16.892470  -2.0000       2       9       4
      5    -7.050373   -0.248878   16.892469  -2.0000       2      12       5
      6     5.591674    1.244385   16.892469  -2.0000       2      10       6
      7    -7.536606   -0.248878   16.892469  -2.0000       2      11       7
      8    -5.591674    2.239894   16.892469  -2.0000       2       9       8
      9     1.215581   -2.737649   16.892469  -2.0000       2       9       9
     10     6.564140    3.235402   16.892469  -2.0000       2      10      10
$

required output

Code:
$cat 1.dat
      1     4.619209   -2.737649   16.892469  -2.0000       2      10       1
      2    -4.132976    1.244385   16.892469  -2.0000       2      10       2
      3     7.536607    3.235402   16.892469  -2.0000       2      10       3
      4    12.885178   -2.737649   16.892470  -2.0000       2       9       4
      5    -7.050373   -0.248878   16.892469  1.0000       3      12       5
      6     5.591674    1.244385   16.892469  -2.0000       2      10       6
      7    -7.536606   -0.248878   16.892469  -2.0000       2      11       7
      8    -5.591674    2.239894   16.892469  -2.0000       2       9       8
      9     1.215581   -2.737649   16.892469  -2.0000       2       9       9
     10     6.564140    3.235402   16.892469  -2.0000       2      10      10
$


I tried
Code:
sed -n '5p' 1.dat |"s/-2.0000       1/1.0000       3/" > 1.dat

, but this just print line #5 and do not give remaining content.

Thank you,
Anuj
Last edited by Scott; 08-14-2012 at 03:11 PM.. Reason: Use code tags, please...
 

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LEARN ABOUT OPENSOLARIS

mlib_videocoloryuv444seq_to_abgrint

mlib_VideoColorYUV444seq_to_ABGRint(3MLIB)		    mediaLib Library Functions			mlib_VideoColorYUV444seq_to_ABGRint(3MLIB)

NAME

       mlib_VideoColorYUV444seq_to_ABGRint - color convert YUV sequential to ABGR interleaved

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       void mlib_VideoColorYUV444seq_to_ABGRint(mlib_u32 *ABGR, const mlib_u8 *Y,
	    const mlib_u8 *U, const mlib_u8 *V, const mlib_u8 *A_array,
	    mlib_u8 A_const, mlib_s32 w, mlib_s32 h, mlib_s32 dlb, mlib_s32 slb);

DESCRIPTION

       The  Y,	U,  V  pixel  streams  are converted into an ABGR pixel stream. All pixel components are 8-bit unsigned integers. All buffers have
       dimensions w and h.

       The alpha values for this function work in the following fashion:

	   o	  If A_array pointer is not NULL, the values are taken from there. It has to have the same dimensions as the Y buffer.

	   o	  If A_array pointer is NULL, the alpha values for every pixel are set to A_const.

       The following equation is used:

	 |R|   |1.1644	0.0000	1.5966|   [|Y|	 | 16.0000|]
	 |G| = |1.1644 -0.3920 -0.8132| * [|U| - |128.0000|]
	 |B|   |1.1644	2.0184	0.0000|   [|V|	 |128.0000|]

PARAMETERS

       The function takes the following arguments:

       ABGR	  Pointer to output buffer.

       Y	  Pointer to Y input buffer.

       U	  Pointer to U input buffer.

       V	  Pointer to V input buffer.

       A_array	  Array of alpha values.

       A_const	  Constant alpha value.

       w	  Image width in pixels.

       h	  Image height in lines.

       dlb	  Linebytes for output buffer.

       slb	  Linebytes for input buffers.

RETURN VALUES

       None.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VideoColorYUV420seq_to_ARGBint(3MLIB),     mlib_VideoColorYUV411seq_to_ARGBint(3MLIB),     mlib_VideoColorYUV422seq_to_ARGBint(3MLIB),
       mlib_VideoColorYUV444seq_to_ARGBint(3MLIB),     mlib_VideoColorYUV420seq_to_ABGRint(3MLIB),     mlib_VideoColorYUV411seq_to_ABGRint(3MLIB),
       mlib_VideoColorYUV422seq_to_ABGRint(3MLIB),    mlib_VideoColorYUYV422int_to_ARGBint(3MLIB),     mlib_VideoColorYUV444int_to_ARGBint(3MLIB),
       mlib_VideoColorYUYV422int_to_ABGRint(3MLIB),    mlib_VideoColorYUV444int_to_ABGRint(3MLIB),    mlib_VideoColorUYVY422int_to_ARGBint(3MLIB),
       mlib_VideoColorUYVY422int_to_ABGRint(3MLIB),    mlib_VideoColorUYV444int_to_ARGBint(3MLIB),     mlib_VideoColorUYV444int_to_ABGRint(3MLIB),
       attributes(5)

SunOS 5.11							    2 Mar 2007				mlib_VideoColorYUV444seq_to_ABGRint(3MLIB)
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