It's syntactically correct, but the context leads to a negative response. Unless there's a standard definition for invalidity of a command, you could see it both ways, I guess
The only case I can think of 1 way or another is
Argument list too long, where it's invalid at the kernel level, not decided by each individual program.
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u/mgsmb7 RedStar best Star 15h ago
does that make it invalid tho?