Case Statements
Case statements allow you to test a string using a series of patterns, executing only the commands for the matching pattern. The general format of the case statement is:
case string in pattern_1) commands ;; pattern_2) commands ;; pattern_3) commands ;; ... esac
The patterns you can use are:
* Matches any string of characters.
? Matches any single character.
[…] Matches any character or a range of characters in the brackets. A range is specified with a hyphen (e.g. A-Z or 1-4).
| Matches the pattern on either side of the | (e.g., John|Sam).
An example case statement is:
#!/bin/bash name=John case $name in john|John) echo Welcome $name ;; sam|Sam) echo Hello $name ;; *) echo You're not invited ;; esac
The * is used for the ...
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