plink

[chusyuancheng]

hello everyone:
I am new to plink.
as I open the plink, it immediately run all of the lines I pasted below, and then I can't type anything after the [Process completed].
How do I fix it ? thanks!

my environment is macOS High Sierra version10.13.4



Last login: Wed Apr 4 14:50:53 on ttys000
/Users/chengchusyuan/Downloads/plink-1.07-mac-intel/plink ; exit;
chengchusyuandeMacBook-Air:~ chengchusyuan$ /Users/chengchusyuan/Downloads/plink-1.07-mac-intel/plink ; exit;

@----------------------------------------------------------@
| PLINK! | v1.07 | 10/Aug/2009 |
|----------------------------------------------------------|
| (C) 2009 Shaun Purcell, GNU General Public License, v2 |
|----------------------------------------------------------|
| For documentation, citation & bug-report instructions: |
| http://pngu.mgh.harvard.edu/purcell/plink/ |
@----------------------------------------------------------@

Web-based version check ( --noweb to skip )
Recent cached web-check found...Problem connecting to web

Writing this text to log file [ plink.log ]
Analysis started: Wed Apr 4 14:54:24 2018

Options in effect:

Before frequency and genotyping pruning, there are 0 SNPs
0 founders and 0 non-founders found
0 SNPs failed missingness test ( GENO > 1 )
0 SNPs failed frequency test ( MAF < 0 )
After frequency and genotyping pruning, there are 0 SNPs

ERROR: Stopping as there are no SNPs left for analysis

logout
Saving session...
...copying shared history...
...saving history...truncating history files...
...completed.

[Process completed]