getting column width in various shells

Madison Kelly linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org
Wed Nov 8 12:57:14 UTC 2006


Hi all,

   I am trying to add line-wrapping to my program and to this end I am 
trying to figure out the different ways of getting the current number of 
columns from the different shells. I am hoping you guys who use shells 
other than bash or sh might be able to help me build a list.

For 'bash' and 'sh', I know this works:
$ echo $COLUMNS

For 'csh' and 'tsch', I *thought* it was the same, and the man page 
seems to agree, but I only get an error:

 > echo $COLUMNS
COLUMNS: Undefined variable.

Beyond these four, I am not even really sure what shells are in common 
use, so feedback on that would be helpful, too.

Thanks!

Madi
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