02-22-2013
sed to replace specific positions on line with file contents
Hi, I am trying to use an awk command to replace specific character positions on a line beginning with 80 with contents of another file.
The line beginning with 80 in file1 is as follows:
Quote:
80................................000000000178800.000010........................
I want to replace the 000000000178800 (positions 34 - 49) on this file with the contents of amended_file_01 -> 000000000206100
The command i am using is:
Quote:
sed '/^80/s/\(^.\{34\}\).\{15\}\(.*\)/\1$amended_file01\2/' file1
The output from this command should be
Quote:
80................................000000000206100.000010........................
But it is returning the filename instead of the file contents
Quote:
80................................$amended_file01.000010........................
How would i get the command to return the file contents instead of the filename?
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LEARN ABOUT MINIX
ppmtopgm
ppmtopgm(1) General Commands Manual ppmtopgm(1)
NAME
ppmtopgm - convert a portable pixmap into a portable graymap
SYNOPSIS
ppmtopgm [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original
image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b.
Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can
read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting
color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original
colors, not necessarily a way that looks like a black and white photograph.
QUOTE
Cold-hearted orb that rules the night
Removes the colors from our sight
Red is gray, and yellow white
But we decide which is right
And which is a quantization error.
SEE ALSO
pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)
AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
10 April 2000 ppmtopgm(1)