At Friday, November 19, 2004 1:30 PM, Dave Korn wrote: >> -----Original Message----- >> From: cygwin-owner On Behalf Of Buchbinder, Barry (NIH/NIAID) >> Sent: 19 November 2004 15:17 > >> This should work whether or not one is on a text mount or for >> the file has DOS or Unix line endings: >> >> cat files.txt | grep -E '\.h^M?$' > > Always test before posting. Even a one liner. That doesn't work, > or at least NFM: > > [EMAIL PROTECTED] /test/grep-test> od -c test.dos.txt > 0000000 H e l l o w o r l d \r \n > 0000015 > [EMAIL PROTECTED] /test/grep-test> od -c test.unix.txt > 0000000 H e l l o w o r l d \n > 0000014 > [EMAIL PROTECTED] /test/grep-test> grep -E 'ld^M?$' * > [EMAIL PROTECTED] /test/grep-test> grep -E 'd^M?$' * > [EMAIL PROTECTED] /test/grep-test> grep -E '.^M?$' * > [EMAIL PROTECTED] /test/grep-test> > > Grep knows there's a char there, but it won't match it with ^M. > > [EMAIL PROTECTED] /test/grep-test> grep -E '.$' * > test.dos.txt:Hello world > test.unix.txt:Hello world > [EMAIL PROTECTED] /test/grep-test> grep -E 'd.$' * > test.dos.txt:Hello world > [EMAIL PROTECTED] /test/grep-test> grep -E 'd^M$' * > [EMAIL PROTECTED] /test/grep-test> grep -E 'd^m$' * > [EMAIL PROTECTED] /test/grep-test> > > > What makes you think grep understands ^ notation to indicate control > chars? It doesn't say so in the info page. (It doesn't recognize > [\r] either.) > > Actually, it seems that grep > > cheers, > DaveK
I tested by cat-ing a batch file and it worked for me. I did not put the two character "^" and "M" in. In bash I put a control-M by hitting control-V and then <enter>. The console showed the two character ^M and I just copied the console screen to the email. (Display of \r as ^M might be due to $CYGWIN containing tty -- I don't know.) During my testing I also discovered that grep does not understand \r. I used the word "should" because I did not test in all combinations of text and binary mounts and line endings. I'm sorry if that choice of word was too ambiguous or subtle. I did not think that grep understood ^M -- I assumed that the readers in this list would understand it. Personally I've never seen the two character ^M used for inputting a \r. It has, in my experience, always been used to indicate a \r in output or when viewing a file in a hex editor so I thought that it would be understood. I apologize for not being explicit. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
