Bash passes flags to shell wrong Post: 38072

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Top Forums Shell Programming and Scripting Bash passes flags to shell wrong Post 38072 by andyj on Sunday 6th of July 2003 09:22:36 PM

07-06-2003

Registered User

Bash passes flags to shell wrong

Hi, first post, so hello to all.
I have a Bash scripting problem that is driving me a bit nutty.

It involves a program called 'convert' which is part of the ImageMagick collection.
Normal usage from the commandline is:

$ convert -resize 120x120 inputfile.jpg outputfile.jpg

This is working just fine (from the command line)

However while inside a shellscript everything seems to go weird, this I beleive should work...

echo converting thumbnails
for searchfile in ./*.jpg
do
echo processing
echo $searchfile
convert ‐resize 120x120 "$searchfile" "$tndir/$searchfile"
done

but I get instead

convert: Unable to open file (‐resize) [No such file or directory].
convert: Unable to open file (120x120) [No such file or directory].

I have tried strong quotes to bind the arguments tighter

convert '‐resize 120x120' "$searchfile" "$tndir/$searchfile"

I have tried opening it in a subshell

(convert ‐resize 120x120 "$searchfile" "$tndir/$searchfile")

But nothing will convince it that -resize 120x120 is an argument not a file!!!

The file arguments themselves are fine $searchdir and $tndir are interpreted right. Indeed I get unaltered files dumped in the destination directory which kind of confirms that its just the -resize flag that isn't getting heard.
I have read the man for this program over many times and I'm sure i'm using it correctly.

Any ideas on how to crack this? Many thanks to any takers.

andyj

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LEARN ABOUT DEBIAN

magick-config

Magick-Config(1)					      General Commands Manual						  Magick-Config(1)

NAME

       Magick-config - get information about the installed version of ImageMagick

SYNOPSIS

       Magick-config [--cflags] [--cppflags] [--exec-prefix] [--ldflags] [--libs] [--prefix] [--version]

DESCRIPTION

       Magick-config prints the compiler and linker flags required to compile and link programs that use the ImageMagick Application Programmer
       Interface.

EXAMPLES

       To print the version of the installed distribution of ImageMagick, use:

	 Magick-config --version

       To compile a program that calls the ImageMagick Application Programmer Interface, use:

	 cc `Magick-config --cflags --cppflags --ldflags --libs` program.c

OPTIONS

       --cflags
	      Print the compiler flags that were used to compile libMagick.

       --cppflags
	      Print the preprocessor flags that are needed to find the ImageMagick C include files and defines to ensure that the ImageMagick data
	      structures match between your program and the installed libraries.

       --exec-prefix
	      Print the directory under which target specific binaries and executables are installed.

       --ldflags
	      Print the linker flags that are needed to link with the ImageMagick library.

       --libs Print the linker flags that are needed to link a program with libMagick.

       --version
	      Print the version of the ImageMagick distribution to standard output.

LICENSE

       See http://www.imagemagick.org/script/license.php.

AUTHORS

       John Cristy, ImageMagick Studio LLC

ImageMagick							    2 May 2002							  Magick-Config(1)