I met about the same situation and the above answer was just what I was needed.
But in your case, here are some hints if you are still interested:
echo $COLUMNS. In my case is was 141.
By manipulating with
export COLUMNS=XXX I was indeed been able to adjust the columns amount.
And this 141 number comes from the next.
.bashrc file contains the next code:
# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize
I don't know for sure, but pretty much seems like using
shopt command Ubuntu detects my screen resolution and sets the according number of terminal columns.
export COLUMNS=XXX allows me to change this number for the current terminal window.
So in your particular case, you would have to add
export COLUMNS=200 after the quoted
shopt -s checkwinsize or at the very end of