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definition:
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checkForCommand :: String -> String -> IO (Maybe ReplState)
-> IO (Maybe ReplState)
checkForCommand cmd errmsg continue = do
excmd <- system $ "which " ++ cmd ++ " > /dev/null"
if (excmd>0) then skipCommand errmsg
else continue
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demand:
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no demanded arguments
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deterministic:
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deterministic operation
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documentation:
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-- Check whether some system command is available. If it is not available,
-- skip the command with the given error message, otherwise continue with
-- the last argument.
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failfree:
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(_, _, _)
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indeterministic:
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referentially transparent operation
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infix:
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no fixity defined
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iotype:
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{(_,_,_) |-> _}
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name:
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checkForCommand
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precedence:
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no precedence defined
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result-values:
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_
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signature:
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String -> String -> Prelude.IO (Prelude.Maybe REPL.State.ReplState)
-> Prelude.IO (Prelude.Maybe REPL.State.ReplState)
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solution-complete:
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operation might suspend on free variables
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terminating:
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possibly non-terminating
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totally-defined:
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possibly non-reducible on same data term
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