03-25-2009
this is what man page says.....
-s FileName
Returns a True exit value if the specified FileName exists and has a size greater than 0.
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Hi I have a bash script like this
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epp(3erl) Erlang Module Definition epp(3erl)
NAME
epp - An Erlang Code Preprocessor
DESCRIPTION
The Erlang code preprocessor includes functions which are used by compile to preprocess macros and include files before the actual parsing
takes place.
EXPORTS
open(FileName, IncludePath) -> {ok,Epp} | {error, ErrorDescriptor}
open(FileName, IncludePath, PredefMacros) -> {ok,Epp} | {error, ErrorDescriptor}
Types FileName = atom() | string()
IncludePath = [DirectoryName]
DirectoryName = atom() | string()
PredefMacros = [{atom(),term()}]
Epp = pid() -- handle to the epp server
ErrorDescriptor = term()
Opens a file for preprocessing.
close(Epp) -> ok
Types Epp = pid() -- handle to the epp server
Closes the preprocessing of a file.
parse_erl_form(Epp) -> {ok, AbsForm} | {eof, Line} | {error, ErrorInfo}
Types Epp = pid()
AbsForm = term()
Line = integer()
ErrorInfo = see separate description below.
Returns the next Erlang form from the opened Erlang source file. The tuple {eof, Line} is returned at end-of-file. The first form
corresponds to an implicit attribute -file(File,1). , where File is the name of the file.
parse_file(FileName,IncludePath,PredefMacro) -> {ok,[Form]} | {error,OpenError}
Types FileName = atom() | string()
IncludePath = [DirectoryName]
DirectoryName = atom() | string()
PredefMacros = [{atom(),term()}]
Form = term() -- same as returned by erl_parse:parse_form
Preprocesses and parses an Erlang source file. Note that the tuple {eof, Line} returned at end-of-file is included as a "form".
ERROR INFORMATION
The ErrorInfo mentioned above is the standard ErrorInfo structure which is returned from all IO modules. It has the following format:
{ErrorLine, Module, ErrorDescriptor}
A string which describes the error is obtained with the following call:
Module:format_error(ErrorDescriptor)
SEE ALSO
erl_parse(3erl)
Ericsson AB stdlib 1.17.3 epp(3erl)