Linuxshell script Base 6-CASE...ESAC usage and wildcard characters

1, the use of CASE...ESAC

#!/bin/Bashecho"Please enter a number to choose a different way to display files and directories:"Echo"1-Normal display"Echo"2-Detailed display"Echo"3-Show hidden files"Echo"4-Exit"Read NUM1 Case$num 1inch        1) LS;; 2) LS-l;; 3) LS-LA;; 4) exit;; Esac

2. Wildcard characters

 #!/bin/bashecho   "  Please enter the filename to extract   read file1  case   ${file1##*.}   " in                  GZ) tar -XZVF ${file1}        ;;        Zip) unzip ${file1};;  *) echo    > Sorry, it's not possible to decompress this format   "  exit ;; Esac  

${file1##*.} The interception of a string means to intercept the file name "." After the string
For example: GZ after test.gz intercept, zip after Test.zip intercept

* Wildcard, representing all matches of 0 or more than 0

mkdir test
Zip Test.zip Test
TAR-CZF test.tar.gz Test

Linuxshell script Base 6-CASE...ESAC usage and wildcard characters