Man Linux: Main Page and Category List


       bup-newliner - make sure progress messages don’t overlap with output


       <any command> 2>&1 | bup newliner


       bup newliner is run automatically by bup.  You shouldn’t need it unless
       you’re using it in some other program.

       Progress messages emitted by bup (and some other tools) are of the form
       “Message ### content”, that is, a status message containing a variable-
       length number, followed by a carriage return character and no  newline.
       If  these  messages  are  printed  more  than once, they overwrite each
       other, so what the user sees is  a  single  line  with  a  continually-
       updating number.

       This  works  fine  until  some  other message is printed.  For example,
       progress messages are usually printed  to  stderr,  but  other  program
       messages  might  be  printed  to stdout.  If those messages are shorter
       than the progress message line, the screen  will  be  left  with  weird
       looking artifacts as the two messages get mixed together.

       bup newliner  prints  extra  space characters at the right time to make
       sure that doesn’t happen.

       If you’re running a program that has problems with these artifacts, you
       can  usually  fix  them by piping its stdout and its stderr through bup


       Part of the bup(1) suite.


       Avery Pennarun <>.