4. ls and using wildcards
Wildcard where applicable: shell command line or shell script.
Regular expressions where applicable: when a string handling, regular and generally have general Perl regular.
Regular expressions and wildcards have the same sign but different meanings !!
Regular Expressions | meaning | Tsuhaifu | meaning |
* | For a character zero or infinite extension | * | 0 to match any number of characters |
? | For the previous character 0 or 1 extension | ? | Matches any single character |
[] | Characters, a single character is given in the range of | [] | Any character set of a match |
[abc] | Represents a or b or c | [abc] | Matching a, b, c of any one of |
[a-f] | A represents any of a to f | [a-f] | F a match to an arbitrary range within a |
Example:
View desktops that meet the [123] file [1234] 3.txt of
1 ls [123][1234]3.txt