PowerShell: filter files by wildcard

Filter file name by wildcard (-filter)

# list jpg files
dir -recurse -file -filter *.jpg

# list emacs backup files. file name ending in TILDE
dir -recurse -file -filter *~

about -filter and limitations

-filter is fast.

-filter accept only Wildcards pattern with * and or ?. No char class, and no multiple patterns, such as *jpg,*jpeg

Filter file name by multiple file extensions

You can use -include or -exclude with Wildcards to filter out files by multiple file name extensions. e.g. -include *.jpg,*.jpeg

-include option is applied after -filter result. It is processed by PowerShell, is some 10 times slower than -filter.

-include can have multiple wildcard patterns e.g. -include *.jpg,*.png

the Exclude parameter is applied after the Include parameter.

🛑 WARNING: when you use -include or -exclude, you must list by dir content, e.g. dir * or with -recurse

-include

dir * -file -include *.jpg,*.jpeg

# or more complete syntax

dir * -file -include "*.jpg","*.jpeg"

-exclude

dir * -file -exclude *.jpg,*.jpeg