measure the width of console output with sfk ruler for Windows, Mac OS X and Linux.

sfk ruler [columns]

print a ruler. supports output chaining.

examples
  sfk ruler 200 +toclip
    copy a 200 columns ruler into clipboard

 
Example output:
         1         2         3         4         5         6         7        
123456789012345678901234567890123456789012345678901234567890123456789012