пятница, 30 сентября 2011 г.
Маленькая мечта
Виртуалне машинке псто
четверг, 29 сентября 2011 г.
Неявно выраженная мысль
Консольне псто
Parameters
A parameter (or argument) is any value passed into a batch script:
C:> MyScript.cmd January 1234 "Some value"
Parameters may also be passed to a subroutine with CALL:
CALL :my_sub 2468
You can get the value of any parameter using a % followed by it's numerical position on the command line. The first item passed is always %1 the second item is always %2 and so on
%* in a batch script refers to all the arguments (e.g. %1 %2 %3 %4 %5 ...%255)
Filename Parameter Extensions
When a parameter is used to supply a filename then the following
extended syntax can be applied:
we are using the variable %1 (but this works for any parameter)
%~f1 Expand %1 to a Fully qualified path name - C:\utils\MyFile.txt
%~d1 Expand %1 to a Drive letter only - C:
%~p1 Expand %1 to a Path only - \utils\
%~n1 Expand %1 to a file Name, or if only a path is present (with no trailing backslash\) - the last folder in that path
%~x1 Expand %1 to a file eXtension only - .txt
%~s1 Change the meaning of f, n and x to reference the Short name (see note below)
%~1 -Expand %1 removing any surrounding quotes (")
%~a1 Display the file attributes of %1
%~t1 Display the date/time of %1
%~z1 Display the file size of %1
%~$PATH:1 Search the PATH environment variable and expand %1 to the fully qualified name of the first match found.
The modifiers above can be combined:
%~dp1 Expand %1 to a drive letter and path only
%~nx2 Expand %2 to a file name and extension only
When writing batch scripts it's a good idea to store these values in a variable SET _LogFile=%~dp1, the rest of the script can then refer to the easy-to-read variable name %_LogFile% This will also make life easier if you later need to change around the order of the parameters.
Note on short file/folder names:
There is a bug involving the ~s option - the displayed output may be wrong if the current directory name is not the same as the short (8.3) name of the directory.
A workaround is to run command.com /c rem which will change the current directory to 8.3, details here.
FOR command parameters
The FOR command creates parameters which are identified with a letter rather than a number. These are easily confused with the parameter modifier letters described above.
Therefore when using FOR it's best to avoid the letters (a, d, f, n, p, s, t, x, z), apart from making code
easier to follow, this can avoid problems when running under NT 4 and Windows 2000:
%0 - the Batch Script itself
You can get the pathname of the .CMD script itself with %0
If the script is stored on a network share, it may be accessed directly from the UNC share or via a mapped drive.
You cannot set the current directory to a UNC path but you can refer to other
files in the same folder as the batch script by using this syntax:
CALL %0\..\SecondBatch.cmd
This can even be used in a subroutine, Echo %0 will give the call label but, echo "%~nx0" will give you the filename of the batch script.
When the %0 variable is expanded in Windows XP, the result is enclosed in quotation marks.
Examples:
Pass parameters from one batch to another:
MyBatch.cmd SMITH 100
Or as part of a CALL :
CALL MyBatch.cmd SMITH 100
Passing values from one part of a script to another
:: Using CALL to jump to a subroutine CALL :s_staff SMITH 100 :: Calling a subroutine from a FOR command FOR /F %%G IN ('DIR /b *.*') DO call :s_subroutine %%G
"A gift is pure when it is given from the heart to the right person at the right time and at the right place, and when we expect nothing in return" - The Bhagavad Gita
Related:
CALL - Call one batch program from another
CMD - Start a new DOS shell (cmd.exe)
IF - Test that required inputs are in place (not NULL)
FOR - Conditionally perform a command several times
SHIFT - Shift the position of replaceable parameters
in a batch file
Equivalent bash command (Linux): dirname - Convert a full pathname to just a path
Подсмотрено тут - пыщ.
среда, 28 сентября 2011 г.
вторник, 20 сентября 2011 г.
Сохранение фотографий
2. Выбрать понравившийся альбом (см. рис.)
3. Щелкнуть на понравившейся фотографии (см.рис.)
4. Щелкнуть по фотографии правой кнопкой мыши и в открывшемся меню выбрать пункт "Сохранить изображение как..." (см.рис.)
5. Открыть папку для сохранения (см.рис.)
6. Сохранить фотографию в указанную папку (см.рис.)
7. При желании можно вернуться назад к списку фотографий текущего альбома, нажав кнопку "Назад":
8. Если же нажать кнопку "Назад" еще раз, то вы попадете на страницу выбора альбомов:
суббота, 17 сентября 2011 г.
Oracle directories
CREATE OR REPLACE DIRECTORY backup_dir AS 'c:\ora_backups';
GRANT READ,WRITE ON DIRECTORY backup_dir TO SYSTEM
-- Как-то я забыл выставить привилегии на папку и при ресторе получил ошибку:
ORA-39002: недопустимая операция
ORA-39070: Невозможно открыть файл журнала.
ORA-29283: недопустимая операция с файлом
ORA-06512: на "SYS.UTL_FILE", line 475 ORA-29283: недопустимая операция с файлом
Записи о директориях хранятся в таблице dba_directories.
понедельник, 12 сентября 2011 г.
Бесплатного софта псто
- Screenshot software GPL "Greenshot" - http://getgreenshot.org/ - принято на вооружение.
- Desktop video recorder "CamStudio" - http://camstudio.org/ - протестировать.
