Usage:
$ ./getSysCallNum.sh wri*
wri* in /usr/include/asm-generic/unistd.h
__NR_write 64
sys_write)
__NR_writev 66
sys_writev, compat_sys_writev)
__NR_pwrite64 68
sys_pwrite64, compat_sys_pwrite64)
__NR_pwritev 70
sys_pwritev, compat_sys_pwritev)
__NR_process_vm_writev 271
sys_process_vm_writev, \