Shell wildcards, regular expressions, and regular expressions

Shell wildcards, regular expressions, and regular expressions can be used in Shell. Common Wildcards are as follows: ●? Represents any single character. ● * represents any string of any length. ● [] represents a string that matches any character set in []. ● {} the strings in braces are separated by commas. Www.2cto.com Declaration: All files in the following display directory do not include recursion. Example 1: show all files starting with apache _ in the current directory # ls apache _ * Example 2: show all files ending with. txt # ls *. txt Example 3: show all files starting with 23 with only three strings # ls 23? Example 4: show all files starting with 23 and ending with a number with only three strings # ls 23 [0-9] example 5: Show cake.docand cars.doc # ls caw.ke, rsw..doc