On Tue, 2006-07-04 at 11:22 +0200, J. E. Palomar wrote:
Hi,
I am newbie in Haskell programing and need to launch a shell command through a Haskell code. In other programing languages like C or Java I know how carry out this task; for instance the code
system("ls -l ")
in C or
exec("ls -l")
in Java work fine and lists the working directory. I know that in interactive mode the Haskell command :! ls -l is similar, but ¿It is possible something like in Haskell non-interactive mode?
The function you're looking for is called 'system' and is in the System module. System.system :: String -> IO ExitCode it does just the same as the C and Java versions. BTW, one way you could have found this out is to search using hoogle: http://haskell.org/hoogle/ searching for 'system' gives the one we want as part of the search results http://haskell.org/hoogle/?q=system and links to the detailed documentation: http://haskell.org/ghc/docs/latest/html/libraries/base/System-Cmd.html#v %3Asystem Duncan