  To assist with the commissioning (Jiang et al. 2019) of the
Five-hundred-meter Aperture Spherical radio Telescope (FAST), we performed a
pulsar search, with the primary goal of developing and testing the pulsar data
acquisition and processing pipelines. We tested and used three pipelines, two
(P1 and P2 hereafter) searched for the periodic signature of pulsars whereas
the other one was used to search for bright single pulses (P3 hereafter). A
pulsar candidate was discovered in the observation on the 22nd August, 2017,
and later confirmed by the Parkes radio telescope on the 10th September, 2017.
This pulsar, named PSR J1900-0134, was the first pulsar discovered by FAST. The
pulsar has a pulse period of 1.8 s and a dispersion measure (DM) of
188\,pc\,cm$^{-3}$.
