How to solve

[ARMEL NYA]

#! /bin/sh

#set -x

triseis < TrimodelVelocity.dat \

xs=0.,4. zs=0.,0. xg=0.,4. zg=0.,0. \

ns=1 fs=1. ng=401 dg=0.02 fg=0. nt=1251 dt=0.004 \

nangle=201 fangle=-65 langle=65 \

kreflect=2 fpeak=12 lscale=0.5 > tmp.dat 

suaddhead < tmp.dat ns=1251 | \

        sushw key=dt a=4000 | sushw key=sx a=1000. |

        sushw key=gx a=0. b=20. c=0 > shotgather1.dat 

rm -f tmp*

exit

********************** On Terminal***************************

Segmentation fault (core dumped)

sushw: fgettr.c: bad first header