9 lines
288 B
Lua
9 lines
288 B
Lua
local function isTTY ( fd )
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fd = tonumber( fd ) or 1
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local ok, exit, signal = os.execute( string.format( "test -t %d", fd ) )
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return (ok and exit == "exit") and signal == 0 or false
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end
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print( "stdin", isTTY( 0 ) )
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print( "stdout", isTTY( 1 ) )
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print( "stderr", isTTY( 2 ) )
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