execve("/home/sun/output.txt", ["/home/sun/output.txt", "linuxcnc"], [/* 37 vars */]) = -1 EACCES (Permission denied)
dup(2)                                  = 3
fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
fstat64(3, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7833000
_llseek(3, 0, 0xbfe74978, SEEK_CUR)     = -1 ESPIPE (Illegal seek)
write(3, "strace: exec: Permission denied\n", 32) = 32
close(3)                                = 0
munmap(0xb7833000, 4096)                = 0
exit_group(1)                           = ?
