Freefilesync

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Freefilesync FreeFileSync Escuela T´ecnicaSuperior de Ingenier´ıade Telecomunicaci´on Universidad Rey Juan Carlos gsyc-profes (arroba) gsyc.urjc.es Octubre de 2020 GSyC - 2020 FreeFileSync 1 ©2020 GSyC Algunos derechos reservados. Este trabajo se distribuye bajo la licencia Creative Commons Attribution Share-Alike 4.0 GSyC - 2020 FreeFileSync 2 Copias de Seguridad Los datos almacenados en un disco se pueden perder en cualquier momento, est´anexpuestos a Fallos hardware Errores humanos Malware (virus) etc En cualquier sistema, las copias de seguridad son de vital importancia Para uso personal, cuando tenemos pocos datos y buena conexi´ona internet, el almacenamiento en la nube con servicios freemium como Google Cloud o Dropbox es una buena soluci´on Para entornos m´asexigentes, es preferible usar nuestros propios dispositivos (pendrives o discos externos) GSyC - 2020 FreeFileSync 3 >Por qu´enecesitamos una aplicaci´onde sincronizaci´on? Supongamos que queremos respaldar nuestro directorio de trabajo en un disco externo reci´encomprado El primer d´ıa,lo copiamos todo El segundo d´ıaqueremos guardar tambi´enlas copias recientes. >Qu´ehacemos? Podemos copiarlo todo de nuevo. Pero estamos desperdiciando recursos (tiempo, acceso a la red, tiempo de vida del disco) Podemos seleccionar a mano las novedades y no copiar nada m´as.Pero es un trabajo tedioso y propenso a errores La soluci´ones una herramienta de sincronizaci´on,que se ocupa de copiar s´ololos ficheros y directorios que se hayan a~nadidoo modificado, autom´aticamente GSyC - 2020 FreeFileSync 4 FreeFileSync FreeFileSync es una aplicaci´onde sincronizaci´onde ficheros Permite comparar dos directorios, detectar las diferencias y propagarlas, de forma que ambos directorios acaben teniendo el mismo contenido Los directorios pueden estar en la m´aquinalocal o en una m´aquinaremota accesible a trav´esde FTP o SFTP. Tambi´en soporta Google Drive Libre y gratuita, disponible para Microsoft Windows, Linux y macOS Software maduro, aparece en 2008 y se actualiza con frecuencia GSyC - 2020 FreeFileSync 5 Con FreeFileSync haremos principalmente dos tipos de sincronizaci´on Sincronizaci´onbidireccional Espejo En ambos casos Antes de sincronizar tendremos dos directorios que normalmente ser´anparecidos pero con algunas diferencias Despu´esde sincronizar, ambos directorios ser´anid´enticos Ambos directorios podr´anestar en cualquier lugar En el mismo disco de la misma m´aquina En otro disco de la misma m´aquina En otro disco de otra m´aquina Incluso en el mismo disco pero otra m´aquina(como en nuestro laboratorio) GSyC - 2020 FreeFileSync 6 Sincronizaci´onbidireccional En la sincronizaci´onbidireccional: Todas las novedades del primer directorio se propagar´anal segundo (ficheros nuevos, modificados o borrados, directorios nuevos, modificados o borrados) Todas las novedades del segundo directorio se propagar´anal primero Tras la sincronizaci´on,ambos directorios ser´anid´enticos Ejemplo t´ıpico: El primer directorio es mi directorio de trabajo en mi pc de casa El segundo directorio es mi directorio de trabajo en el laboratorio GSyC - 2020 FreeFileSync 7 Figura: Pantalla principal de FreeFileSync Ventana principal. El panel de la izquierda muestra el directorio local. El de la derecha, el remoto GSyC - 2020 FreeFileSync 8 Espejo En la sincronizaci´on espejo, tenemos dos directorios Uno es el principal Otro ser´auna copia Despu´esde la sincronizaci´on,ambos ser´an id´enticos Para ello: Todas las novedades del principal se llevar´ana la copia En el directorio copia no deber´ıahaber novedades, y si las hay, ser´anignoradas y destruidas Ejemplo t´ıpico: El primer directorio es mi directorio de trabajo El segundo es una copia de seguridad en un disco externo GSyC - 2020 FreeFileSync 9 C´omosincronizar Para sincronizar los directorios Indicamos el primer directorio en el panel de la izquierda Indicamos el segundo directorio en el panel de la derecha Pulsamos el icono de la rueda dentada verde para especificar el tipo de sincronizaci´on(bidireccional o espejo) Pulsamos comparar Pulsamos sincronizar Pulsando el icono del filtro, tenemos la opci´onde excluir algunos ficheros. Por ejemplo *.o, *.exe GSyC - 2020 FreeFileSync 10 Figura: Opciones de sincronizaci´on En la ventana de la rueda dentada verde indicamos el tipo de sincronizaci´on GSyC - 2020 FreeFileSync 11 Desde el icono de la nube accedemos a la ventana de almacenamiento en l´ınea, donde podemos indicar que el directorio estar´aen una m´aquina remota. Por ejemplo en el laboratorio de la ETSIT, accesible mediante el protocolo SFTP GSyC - 2020 FreeFileSync 12 Conflictos En la sincronizaci´onbidireccional, es importante sincronizar siempre que cambiemos de m´aquina,de lo contrario se producir´aun conflicto Ejemplo: El lunes trabajo en casa y sincronizo el directorio contra el laboratorio El martes trabajo en el laboratorio El mi´ercolesvuelvo a casa, pero olvido sincronizar. A~nado mis cambios sobre la versi´ondel lunes, no sobre la del martes En este caso, tendr´ecambios que solo estar´anen casa, y otros que solo estar´anen el laboratorio FreeFileSync nos avisar´adel problema, que tendremos que corregir a mano GSyC - 2020 FreeFileSync 13 El conflicto se se~nalacon un icono en forma de chispa naranja GSyC - 2020 FreeFileSync 14 El problema tendremos que corregirlo nosotros manualmente: hacemos lo necesario para que uno de los directorios est´e correcto y luego hacemos una sincronizaci´onespejo GSyC - 2020 FreeFileSync 15 Guardar la configuraci´on Finalmente, guardaremos toda la configuraci´onen un fichero de extensi´on .ffs_gui, para poder repetir la sincronizaci´onen la siguiente ocasi´on,sin volver a especificarlo todo. Aqu´ıpuedes ver una sesi´onde ejemplo: https://youtu.be/gJGp6liznE0 GSyC - 2020 FreeFileSync 16.
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