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Дата изменения: Fri Jan 17 12:43:20 1997
Дата индексирования: Tue Oct 2 01:14:41 2012
Кодировка:

The || operator

The `||` operator

You can use the || operator to execute a command and, if it fails, execute the next command in the command list. For example:

   cmd1 || cmd2

cmd1 is executed and its exit status examined. If cmd1fails then cmd2 is executed. This is a terse notation for:

   cmd1
   if 	test $? -ne 0
   then
     cmd2 
   fi

Example