user@machine:~/OpenFOAM/OpenFOAM-2.2.x/bin/tools$ filePath=../../../src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H
user@machine:~/OpenFOAM/OpenFOAM-2.2.x/bin/tools$ echo ${filePath%/[^/]*}
../../../src/OpenFOAM/fields/DimensionedFields/DimensionedField

user@machine:~/OpenFOAM/OpenFOAM-2.2.x/bin/tools$ dash
$ filePath=../../../src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H
$ echo ${filePath%/[^/]*}
../../../src/OpenFOAM/fields/DimensionedFields/DimensionedField/DimensionedField.H