Some shells like zsh, bash or mksh automatically set the $COLUMNS variable to the width of the terminal, so you don't need to invoke stty here.

My implementation of ps queries the terminal width by itself. I'm surprised yours doesn't. I expect it will look at the content of the COLUMNS environment variable though.

So you could do:

export COLUMNS; ps aux

If not,

ps aux | cut -c"1-$COLUMNS"

You can also tell your terminal not to wrap lines:

tput rmam
ps aux

Some shells like zsh, bash or mksh automatically set the $COLUMNS variable to the width of the terminal, so you don't need to invoke stty here.

All the implementations of ps I tried that support that non-standard (BSD-type) syntax query the terminal width by themselves. I'm surprised yours doesn't. I expect it will look at the content of the COLUMNS environment variable though.

So you could do:

export COLUMNS; ps aux

If not,

ps aux | cut -c"1-$COLUMNS"

You can also tell your terminal not to wrap lines:

tput rmam
ps aux