a.rb

cwage@portaptty:/opt/bibble5/bin$ strace -f -F -s 8192 ./bibble5 
execve("./bibble5", ["./bibble5"], [/* 47 vars */]) = -1 ENOENT (No such file or directory)
dup(2)                                  = 3
fcntl(3, F_GETFL)                       = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(3, {st_mode=S_IFCHR|0600, st_rdev=makedev(136, 2), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f352bd97000
lseek(3, 0, SEEK_CUR)                   = -1 ESPIPE (Illegal seek)
write(3, "strace: exec: No such file or directory\n", 40strace: exec: No such file or directory
) = 40
close(3)                                = 0
munmap(0x7f352bd97000, 4096)            = 0
exit_group(1)                           = ?