Differ

Presentation

Differ is a tools that compares two folders.

Used as an API, it returns the differences.
Used as a standalone program, it prints the differentes.

Use-case

I have developped Differ to check that I don't miss anything when I perform manual backup (on my NAS). I don't like the principle of synchronizing folders because of the unattented deletion risk.

I usually copy my important files from folder A to folder B and I check with Differ if something new has not beenbackuped yet or if something has changed an not been backuped yet

Execution

./differ [-c {configurationFile}] {from} {to}

-c {configurationFile} : configuration file
{from} : 'source' folder
{to} : 'target' folder

Return codes :

0 : no difference
1 : differences detected
2 : configuration error
3 : execution error

Configuration file

If no configuration file is provided :

there will be no blacklisted files

Sample configuration file :

{
	"BlacklistedPatterns":[
		"^.*txt$",
		"^.*doc$"
	]
}

Configuration settings :

BlacklistedPatterns : regular expressions to blacklist files. Blacklisted files won't be checked.

Output

WARN[0000] [S] folder/different.txt
WARN[0000] [M] folder/nonExistingInTo.txt
WARN[0000] [M] folderNonExistingInTo
WARN[0000] [S] different.txt
WARN[0000] [T] differentType
WARN[0000] [M] nonExistingInTo.txt