Each application is designed to be executed from a terminal command line,
typically reading and writing a set of data files associated with a particular case.
The data files for a case are stored in a directory named after the case as
described in 4.1; the directory name with full path is here given the generic name
<caseDir>.
For any application, the form of the command line entry for any can be found
by simply entering the application name at the command line with the -help
option, e.g. typing
The arguments in square brackets, [ ], are optional flags. If the application
is executed from within a case directory, it will operate on that case.
Alternatively, the -case <caseDir> option allows the case to be specified
directly so that the application can be executed from anywhere in the filing
system.
Like any UNIX/Linux executable, applications can be run as as a background
process, i.e. one which does not have to be completed before the user can give the
shell additional commands. If the user wished to run the blockMesh example as a
background process and output the case progress to a log file, they could enter:
