When I tried this, it mapped all punctuation to 'Z'. It seems like the second argument needs something like [*] tacked on (enough nothings to make arg2 as big as arg1). This didn't work, and I couldn't find a "null" special character in the tr man pages.
Might I suggest: cat filename | tr '[:lower:][:punct:]' '[:upper:][a*]' | sed 's/a//g' > filename2 Since the lower-to-upper translation has been performed, 'a' (or any other lower-case letter) will safely match all punctuation (i.e., sed won't be deleting any a's that are really a's and not punctuation marks). Marc Mongeon >>> Ian Peters <[EMAIL PROTECTED]> 05/06 7:22 AM >>> On Thu, May 06, 1999 at 12:12:37PM +0000, Richard Harran wrote: cat filename | tr '[:lower:][:punct:]' '[:upper:]' > filename2
