Busybox better. With nc(1), IDK about the Bash syntax, so adapt it:

echp vol/rzm6/busybox/binaries/1.21.1/busybox-i586 | nc ftp.icm.edu.pl 70 > busybox

chmod it with a simple C file:

cat > cbox.c << EOF

#include <stdio.h>

#include <sys/stat.h>

int main(){

chmod("/home/crap/busybox", S_IXUSR);

return(0);

}

EOF

cc -o cbox cbox.c

./cbox

./busybox | ./busybox more