- find
  ----
  - Read find man page for interesting options:
    - All numeric options take optional + (more than) or - (less than)
    - Combine selector options (primaries) via:
                       () ! -false -not -and  -or 
    -d              Depth-first (for use w/rm and such, to do children first)
    -f              Roots to start from (default is all params after options
                    and before selectors -- can have multiple roots)
    -s              Sort filenames within each directory

    -print          Space separated filenames (default)
    -print0         Null separated filenames, for use with xargs -0
    -delete         Delete files and dirs (implies depth-first)
    -exec           Run command on file or batches of files (like xargs)
    -execdir        -exec but set CWD first
    -ok             -exec but prompt first
    -okdir          -ok but set CWD first
    -ls             Output format of ls -dgils

    -name           Filename matches pattern
    -iname          Case-insensitive -name
    -path           Path matches pattern
    -ipath          Case-insensitive -path
    -regex          Path, including filename, matches pattern
    -iregex         Case-insensitive -regex

    -Bmin n         Files created n mins ago
    -Bnewer file    Files created since file was modified
    -Btime n[smhdw] Files created n days (secs, mins, hours, days, weeks) ago
    -amin n         Same, but for files accessed then
    -anewer file
    -atime n[smhdw] 
    -amin n         Same, but for files accessed then
    -anewer file
    -atime n[smhdw] 
    -cmin n         Same, but for file status info changed then
    -cnewer file
    -ctime n[smhdw] 
    -mmin n         Same, but for file contents modified then
    -mnewer file
    -mtime n[smhdw] 
    -newer file     Files modified since file modified
    -newer[aBcm][aBcmt] file
                    Files accessed/created/changed/modified since file was
                    accessed/created/changed/modified or since the specified 
                    date-time spec (as the quoted filename).

    -empty          Empty files
    -size n[ckMGTP] Size is n chars, kB, MB, GB, TB, PB

    -type [bcdflps] File is block special/char special/dir/file/link/pipe/socket
    -fstype type    Files on specified file system type

    -user user      Files owned by user
    -nouser         Files owned by unknown user
    -group group    Files owned by group
    -nogroup        Files owned by unknown group
    -perm           Files w/various permission bits, setuid, etc. set
    -flags          Files w/various permission bits, setuid, etc. set or not set

    -links n        Files w/n links
    -depth n        Files n directory levels deep
    -maxdepth n     Max depth (0 = CLI args only)
    -mindepth n     Min depth
    -prune          Skip subdirectory