Warning: bad syntax, perhaps a bogu '-'? See/usr/share/doc/procps-3.2.7/faq

PS often encounters this low-level error.

I thought it was a system setup problem.

 

Now let's take a look at the differences between the two commands.

#PS-Aux | grep nginx | grep-V grep
Warning: bad syntax, perhaps a bogu '-'? See/usr/share/doc/procps-3.2.7/faq
Root 25962 0.0 0.0 40892 868? SS nginx: Master process/usr/local/nginx/sbin/nginx
WWW 25963 0.0 0.0 41268 1392? S nginx: Worker Process

#PS aux | grep nginx | grep-V grep
Root 25962 0.0 0.0 40892 868? SS nginx: Master process/usr/local/nginx/sbin/nginx
WWW 25963 0.0 0.0 41268 1392? S nginx: Worker Process

 

This problem has been around for a long time. Today, after reading it, It is very awkward, just like troubleshooting. Now, it's okay. The problem has already exceeded itself.

That sentence is true. "Careful, sensitive, and suspicious" should be our work attitude.