Hi davidra,
I'm glad to hear that my contribution worked for you.

This is what ${source##*/} does: it looks at the shell variable named source and if its value matches the pattern */ (which matches any string that ends with a / character), it removes the longest match for that pattern from the start (left) of the string. If $source does not contain any / characters, it is expanded unchanged. Similarly, ${var#pattern} removes the shortest match for pattern from the start of the expansion of $var, ${var%pattern} removes the shortest match for pattern from the end of the expansion of $var, and ${var%%pattern} removes the longest match for pattern from the end of the expansion of $var. For example:

Code:

src="/usr/src/cmd.c"
echo X${src##*/}X X${src#*/}X X${src%/*}X X${src%%/*}X X${src%XYZ}X

produces the output:

Code:

Xcmd.cX Xusr/src/cmd.cX X/usr/srcX XX X/usr/src/cmd.cX