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Full Discussion: Tcsh, using " in a string variable
Top Forums Shell Programming and Scripting Tcsh, using " in a string variable Post 303022336 by DanielDD on Thursday 30th of August 2018 09:40:04 AM
Old 08-30-2018
Tcsh, using " in a string variable
Hallo,

I try to write a tcsh-script which works with ImageMagick.
The following command line works perfectly:

Code:
convert a.tif -pointsize 80 -draw " gravity NorthWest fill black text 0,12 a " b.tif

I use the following code in a script (it is a minimal example to show the problem):

Code:
#!/bin/tcsh 
set gf = \" 
set namestr = "-pointsize 80 -draw $gf gravity NorthWest fill black text 0,12 a $gf" 
echo $namestr
convert a.tif $namestr b.tif

In my opinion, the last line of the code should do the same as the above command. However, the last line produces error messages, which are related to the "-symbols in namestr.

Any idea to get the script working?

Daniel
 

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LEARN ABOUT OPENSOLARIS

rgb2ycbcr

rgb2ycbcr(1)							   User Commands						      rgb2ycbcr(1)

NAME

       rgb2ycbcr - convert non-YCbCr TIFF images to YCbCr TIFF images

SYNOPSIS

       rgb2ycbcr [options] src1.tif [src2.tif...] dest.tif

DESCRIPTION

       rgb2ycbcr converts RGB color, grayscale, or bi-level TIFF images to YCbCr images by transforming and sampling pixel data. If multiple files
       are specified on the command line, each source file is converted to a separate directory in the destination file.

       By default, chrominance samples are created by sampling 2 by 2 blocks of luminance values, and output data files are  compressed  with  the
       LZW  compression scheme, with each strip no more than 8 kilobytes. These characteristics can be overridden or explicitly specified with the
       options described below.

OPTIONS

       The following options are supported:

       -c	       Specify a compression scheme to use when writing image data:

		       -c jpeg		       Baseline JPEG compression algorithm.

		       -c lzw		       Lempel-Ziv and Welch algorithm. This is the default algorithm.

		       -c none		       No compression.

		       -c packbits	       PackBits compression algorithm.

       -h	       Set the horizontal sampling dimension to one of the following: 1, 2, or 4. The default value is 2.

       -r	       Write data with a specified number of rows per strip. By default, the number of rows per strip is  selected  so	that  each
		       strip is approximately 8 kilobytes.

       -v	       Set the vertical sampling dimension to one of the following: 1, 2, or 4. The default value is 2.

OPERANDS

       The following operands are supported:

       src.tif	       The name of the input file that contains non-YCbCr TIFF data.

       dest.tif        The name of the output file that contains YCbCr TIFF data.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWTiff			   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Uncommitted		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       tiffinfo(1), tiffcp(1), libtiff(3)

NOTES

       Updated by Breda McColgan, Sun Microsystems Inc., 2004.

SunOS 5.11							    26 Mar 2004 						      rgb2ycbcr(1)
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