ngspice gives no output

Hello,

when i run the following circuit via ngspice(Lubuntu 18.04),

Code:

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circuit
V 0 1  DC 10
R 0 1 5
.end

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it outputs this:

Code:

---

Circuit: circuit


ngspice 1 ->

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"print all" leads to this:

Code:

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Circuit: circuit


ngspice 1 -> print all
false = 0.000000e+00
true = 1.000000e+00
boltz = 1.380620e-23
c = 2.997925e+08
e = 2.718282e+00
echarge = 1.602190e-19
i = 0.000000e+00,1.000000e+00
kelvin = -2.73150e+02
no = 0.000000e+00
pi = 3.141593e+00
planck = 6.626200e-34
yes = 1.000000e+00

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Why is there no output?

Thanks in advance