Safe Haskell | None |
---|---|
Language | Haskell2010 |
Documentation
endOfExecutable :: String -> IO (Maybe String) Source #
Function that is used instead of os
to check whether the executable ends in .exe. The function returns IO Nothing
if there is neither ys
nor (ys ++ ".exe")
names for executables in the
variable PATH
showE :: String -> Maybe String Source #
Function to get the proper name of the executable in the system (it must be seen in the directories in the PATH
variable).
You can use showE
"nameOfExecutable" to get Just "nameOfExecutable"
if it is present on the system. Further you can adopt it to be used
inside the callCommand
as the name of the executable
findSysExes :: [String] -> Maybe String Source #
Function that being given a list of names of executables (without .exe suffix) looks up for them in the specified list order till the first existing occurrence.
If there is no such occurrence (the specified executables are not installed in the directories mentioned in the variable PATH
) then the function returns Nothing
.