sh: 1: ~/mosesdecoder/symal: Permission denied

[travel-go]

Hello，I want to replace the unk with your replace method.when I want to build a dictionary,I meet a problem.

sh: 1: /home/hfyu/mosesdecoder-master/symal: Permission denied

I use chomd 777,but it did not work.
this is my order

sudo python2 build_sym_alignment.py --fast_align_dir /home/hfyu/fast_align-master/build --mosesdecoder_dir /opt/moses/mosesdecoder/ --source_file /home/hfyu/data-seq/train.ch --target_file /hodir /home/hfyu/fairseq-old/scripts/dict