find files by parts of their filename quickly by typing a very short command in the Windows, Mac OS X, Linux, Raspberry Pi command line. free portable tool, no installation.

- download the free Swiss File Knife Base from Sourceforge.
- open the Windows CMD command line, Mac OS X Terminal or Linux shell.
- OS X : type mv sfk-mac-64.exe sfk and chmod +x sfk then ./sfk
- Linux: type mv sfk-linux-64.exe sfk    and chmod +x sfk then ./sfk
  OS X and Linux syntax may differ, check the help within the tool.

sfk filefind [or ff] pattern [pattern2 !pattern3 ...] [opts]

easy file name finder for the current directory tree.
if you remember any words of a filename, or its path,
type "sfk ff " and the words to find matching filenames.
to type even less, try "sfk :" followed by the first word,
without blank: "sfk :word1 word2 ..."

note:
- searches the current directory "." and all subdirectories.
- the full filename paths, including relative filenames,
  are compared (not just the relative filenames).
- the patterns are AND combined (not OR as with list),
  meaning that ALL given patterns must appear in a path
  to have it listed. the pattern sequence is ignored.
- options may appear anywhere.
- exclude patterns starting with ! are also supported.

options
   -time      list also file times.
   -size[=n]  show size of files [n characters wide]
   -kbytes    or -kb lists sizes in kbytes instead of bytes
   -mbytes    or -gbytes lists sizes in mbytes or gbytes
   -kbpure    list without "kb" postfix
   -arc   include .zip .jar .tar etc. archive contents.

chaining support
   output chaining is supported.

web reference
   http://stahlworks.com/sfk-filefind

examples
   sfk filefind foo bar !save
      lists all files in the current directory tree having both
      foo and bar in their path+filename, regardless of sequence.
      files having "save" in their path (or name) are excluded.

   sfk ff foo*bar thing +fview
      similar to the above, lists all files having bar AFTER foo
      in their path+filename. thing must also be present.
      resulting files are loaded and shown in Depeche View.

   sfk :.pdf
      list all .pdf files down somewhere in the directory tree.

   sfk :debug*.o +del
      delete all debug executables in the current directory tree.
see also:
   sfk list dirname filenamepattern ...
   sfk list dirname +filter -+pattern1 -+pattern2 ...

read more about all sfk functions here.