Cum faci un program de backup singur

Configurare noua (How To)

Situatie

Ca sa reusesti sa iti faci un mic programel de backup nu trebuie decat sa citesti putin help-ul unei comenzi din comand prompt

Solutie

Pasi de urmat

Ce trebuie sa stiti “cititi” … o simpla comanda numita xcopy ce are urmatoarele atribute:

C:Usersadmin>xcopy /?
Copies files and directory trees.

XCOPY source [destination] [/A | /M] [/D[:date]] [/P] [/S [/E]] [/V] [/W]
                           [/C] [/I] [/Q] [/F] [/L] [/G] [/H] [/R] [/T] [/U]
                           [/K] [/N] [/O] [/X] [/Y] [/-Y] [/Z] [/B]
                           [/EXCLUDE:file1[+file2][+file3]...]

  source       Specifies the file(s) to copy.
  destination  Specifies the location and/or name of new files.
  /A           Copies only files with the archive attribute set,
               doesn't change the attribute.
  /M           Copies only files with the archive attribute set,
               turns off the archive attribute.
  /D:m-d-y     Copies files changed on or after the specified date.
               If no date is given, copies only those files whose
               source time is newer than the destination time.
  /EXCLUDE:file1[+file2][+file3]...
               Specifies a list of files containing strings.  Each string
               should be in a separate line in the files.  When any of the
               strings match any part of the absolute path of the file to be
               copied, that file will be excluded from being copied.  For
               example, specifying a string like obj or .obj will exclude
               all files underneath the directory obj or all files with the
               .obj extension respectively.
  /P           Prompts you before creating each destination file.
  /S           Copies directories and subdirectories except empty ones.
  /E           Copies directories and subdirectories, including empty ones.
               Same as /S /E. May be used to modify /T.
  /V           Verifies the size of each new file.
  /W           Prompts you to press a key before copying.
  /C           Continues copying even if errors occur.
  /I           If destination does not exist and copying more than one file,
               assumes that destination must be a directory.
  /Q           Does not display file names while copying.
  /F           Displays full source and destination file names while copying.
  /L           Displays files that would be copied.
  /G           Allows the copying of encrypted files to destination that does
               not support encryption.
  /H           Copies hidden and system files also.
  /R           Overwrites read-only files.
  /T           Creates directory structure, but does not copy files. Does not
               include empty directories or subdirectories. /T /E includes
               empty directories and subdirectories.
  /U           Copies only files that already exist in destination.
  /K           Copies attributes. Normal Xcopy will reset read-only attributes.
  /N           Copies using the generated short names.
  /O           Copies file ownership and ACL information.
  /X           Copies file audit settings (implies /O).
  /Y           Suppresses prompting to confirm you want to overwrite an
               existing destination file.
  /-Y          Causes prompting to confirm you want to overwrite an
               existing destination file.
  /Z           Copies networked files in restartable mode.
  /B           Copies the Symbolic Link itself versus the target of the link.
  /J           Copies using unbuffered I/O. Recommended for very large files.

The switch /Y may be preset in the COPYCMD environment variable.
This may be overridden with /-Y on the command line.

Ce face ea … pai nu face foarte multe, insa e ceva mai desteapta decat o simpla copiere precum click drepata copy si paste deoarece ea stie sa faca si diferenta intre anumite fisiere din calculatoarele voastre si anume:

Deoarece  vrem sa facem un backup in totalitate la folderul Documente aflat in partitia a doua D: direct pe Hard disk-ul extern care are alocata ca exemplu litera M.

Conform instructiunilor date de Microsoft pentru comanda xcopy de mai sus, pentru a putea copia fara erori si in functie de timpul cat ati modificat fisierele comanda de copiere poate fi de genul:

xcopy D:Documente M: /C /D /E /Y

Pentru a putea crea un asa zis program aceasta comanda se poate introduce intr-un fisier notepad si salvat cu extensia bat la fel ca in imaginea de mai jos.

In cazul in care exista mai multe foldere la care ati vreti sa facei backup in functie de timpul cand le-ati modificat singurul lucuru care trebuie sa il mai faceti este sa adaugati pentru fiecare folder imparte cate o linie ca urmatoarea:

xcopy calea_de_unde_se copiaza spatiu calea_unde_trebuie_copiat_directorul: /C /D /E /Y

un exemplu mai concret ar fi:

xcopy “D:temelucrare licenta” “M:Lucrare_licenta” /C /D /E /Y

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