Error : [: missing `]'


 
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Old 10-27-2010
DGPickett,

I agree, readibility is important and the if/fi structure is perhaps better from that perspective. And yes, exec() adds overhead and the built-in resources should be used as much as possible. This prompted another quick search and it turns out that bash 3 has support for "=~" operator and built-in regex checks. Here is yet another version of the *obfuscated* ;-) integer test:

Code:
#/bin/bash
[[ ! $1 =~ "^[0-9]+$" ]] && { echo "Invalid input; Enter an integer..."; exit 2; }

cheers,

-IETF
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MPI_File_get_position_shared(3OpenMPI)									    MPI_File_get_position_shared(3OpenMPI)

NAME
MPI_File_get_position_shared - Returns the current position of the shared file pointer. SYNTAX
C Syntax #include <mpi.h> int MPI_File_get_position_shared(MPI_File fh, MPI_Offset *offset) Fortran Syntax (see FORTRAN 77 NOTES) INCLUDE 'mpif.h' MPI_FILE_GET_POSITION_SHARED(FH, OFFSET, IERROR) INTEGER FH, IERROR INTEGER(KIND=MPI_OFFSET_KIND) OFFSET C++ Syntax #include <mpi.h> MPI::Offset MPI::File::Get_position_shared() const INPUT PARAMETER
fh File handle (handle). OUTPUT PARAMETERS
offset Offset of the shared file pointer (integer). IERROR Fortran only: Error status (integer). DESCRIPTION
MPI_File_get_position_shared returns, in offset, the current position of the shared file pointer in etype units relative to the current displacement and file type. FORTRAN 77 NOTES The MPI standard prescribes portable Fortran syntax for the OFFSET argument only for Fortran 90. Sun FORTRAN 77 users may use the non-por- table syntax INTEGER*MPI_OFFSET_KIND OFFSET where MPI_ADDRESS_KIND is a constant defined in mpif.h and gives the length of the declared integer in bytes. ERRORS
Almost all MPI routines return an error value; C routines as the value of the function and Fortran routines in the last argument. C++ func- tions do not return errors. If the default error handler is set to MPI::ERRORS_THROW_EXCEPTIONS, then on error the C++ exception mechanism will be used to throw an MPI:Exception object. Before the error value is returned, the current MPI error handler is called. For MPI I/O function errors, the default error handler is set to MPI_ERRORS_RETURN. The error handler may be changed with MPI_File_set_errhandler; the predefined error handler MPI_ERRORS_ARE_FATAL may be used to make I/O errors fatal. Note that MPI does not guarantee that an MPI program can continue past an error. Open MPI 1.2 September 2006 MPI_File_get_position_shared(3OpenMPI)