Glob (programming)

Expand Unix filenames using wildcards.

Wildcards: * ?

Grouping characters: {} []

*.c all files with '.c' as extension.

hello.? all files starting with 'hello.' and one character as extension.

hello.[ch] all files having 'c' or 'h' as extension.

[a-d]*.jpeg all files beginning with 'a' to 'd' and having 'jpeg' as extension.

index.{htm,html} all files called either 'index.htm' or 'index.html'.

Glob is in family with Regular Expression.