Provided by: libio-aio-perl_4.60-1build1_amd64 bug


       treescan - scan directory trees, list dirs/files, stat, sync, grep


          treescan [OPTION...] [PATH...]

             -q, --quiet    do not print list of files/directories
             -0, --print0   use null character instead of newline to separate names
             -s, --stat     call stat on every entry, to get stat data into cache
             -d, --dirs     only list dirs
             -f, --files    only list files
             -p, --progress regularly print progress to stderr
                 --sync     open/fsync/close every entry
             -g, --grep=RE  only list files that match the gibven perl RegEx


       The treescan command scans directories and their contents recursively. By default it lists
       all files and directories (with trailing "/"), but it can optionally do various other

       If no paths are given, treescan will use ".", the current directory.

       -q, --quiet
           By default, treescan prints the full paths of all directories or files it finds. This
           option disables printing of filenames completely. This is useful if you want to run
           treescan solely for its side effects, such as pulling "stat" data into memory.

       -0, --print0
           Instead of using newlines, use null characters after each filename. This is useful to
           avoid quoting problems when piping the result into other programs (for example, GNU
           grep, xargs and so on all have options to deal with this).

       -s, --stat
           Normally, treescan will use heuristics to avoid most "stat" calls, which is what makes
           it so fast. This option forces it to "stat" every file.

           This is only useful for the side effect of pulling the "stat" data into the cache. If
           your disk cache is big enough, it will be filled with file meta data after treescan is
           done, which can speed up subsequent commands considerably. Often, you can run treescan
           in parallel with other directory-scanning programs to speed them up.

       -d, --dirs
           Only lists directories, not file paths. This is useful if you quickly want a list of
           directories and their subdirectories.

       -f, --files
           Only list files, not directories. This is useful if you want to operate on all files
           in a hierarchy, and the directories would ony get in the way.

       -p, --progress
           Regularly print some progress information to standard error. This is useful to get
           some progress information on long running tasks. Since the progress is printed to
           standard error, you can pipe the output of treescan into other programs as usual.

           The "--sync" option can be used to make sure all the files/dirs in a tree are sync'ed
           to disk. For example this could be useful after unpacking an archive, to make sure the
           files hit the disk before deleting the archive file itself.

       -g, --grep=RE
           This applies a perl regular expression (see the perlre manpage) to all paths that
           would normally be printed and will only print matching paths.

           The regular expression uses an "/s" (single line) modifier by default, so newlines are
           matched by ".".


        Marc Lehmann <>