How to accommodate spaces in a variable in a bash shell script? -

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hopefully should simple one... here test.sh file:

#!/bin/bash patch_file="/home/my dir/vtk.patch" cmd="svn \"$patch_file\"" $cmd

note space in "my dir". when execute it, 

$ ./test.sh  skipped '"/home/my' skipped 'dir/vtk.patch"'

i have no idea how accommodate space in variable , still execute command. executing following on bash shell works without problem. 

$ svn "/home/my dir/vtk.patch"   #works!!!

any suggestions appreciated! using bash cygwin on windows.

use eval $cmd, instead of plain $cmd


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