updated readme and added default ini file

README.md

@@ -1,3 +1,98 @@
 # SideCarJpegCleaner
 
 A small tool to clean up a folder with raw and jpeg files. It scans the directory for jpg files and removes all without a corresponding raw file.
+
+## Dependencies
+
+There are some external dependencies to build the application.
+
+- logrus: This is a little logging library that is quite handy
+- iniflags: The iniflags makes handling configuration files and applications parameters quite easy.
+
+## Get the source
+
+To get the latest version, you should ``git clone https://git.haefelfinger.net/piwigo/SideCarJpegCleaner.git`` to
+your local disk or into your local go source directory by using ``go get git.haefelfinger.net/piwigo/SideCarJpegCleaner`.
+
+### GO modules
+
+The repository supports gomodules so the modules should be resolved automatically during build or test run.
+But just in case, here are the manual commands to install them. This is needed if you put this repo inside the GOPATH
+as this sets the module config to ignore.
+
+To get all dependencies at once:
+
+```
+go get ./...
+```
+
+### Manual dependency installation
+
+You may install the dependencies manually with the following commands
+or just use the command under "GO modules" to get all dependencies.
+
+```
+go get github.com/sirupsen/logrus
+go get github.com/vharitonsky/iniflags
+```
+
+## Build
+
+Build the main executable by using the following command. By default it gets the name SideCarJpegCleaner
+but can be renamed to your favorite application name.
+
+```
+go build go build cmd/SideCarJpegCleaner/SideCarJpegCleaner.go
+```
+
+## Configuration
+
+### Command line
+
+You get the following help information to the command line by using:
+
+```
+./SideCarJpegCleaner -help
+```
+
+The following options are supported to run the application from the command line.
+
+```
+Usage of ./SideCarJpegCleaner:
+  -allowMissingConfig
+        Don't terminate the app if the ini file cannot be read.
+  -allowUnknownFlags
+        Don't terminate the app if ini file contains unknown flags.
+  -config string
+        Path to ini config for using in go flags. May be relative to the current executable path.
+  -configUpdateInterval duration
+        Update interval for re-reading config file set via -config flag. Zero disables config file re-reading.
+  -dryRun
+        If set to true, all actions are run except the real filesystem modifications (default true)
+  -dumpflags
+        Dumps values for all flags defined in the app into stdout in ini-compatible syntax and terminates the app.
+  -imagesRootPath string
+        This is the images root path that should be cleaned.
+  -logLevel string
+        The minimum log level required to write out a log message. (panic,fatal,error,warn,info,debug,trace) (default "info")
+```
+
+### Configuration file
+
+It is also possible to use a configuration file to save the settings to be used with multiple directories.
+To use configuration files, just copy the default one and edit the parameters to your wish.
+
+```
+cp ./configs/defaultConfig.ini ./localConfig.ini
+nano ./localConfig.ini
+```
+
+## Run the cleaner
+
+Finally you may run the application using the following example command.
+
+```
+./SideCarJpegCleaner -config=./localConfig.ini
+```
+
+**It is recommendet to do a dry run first!**

configs/defaultConfig.ini

@@ -0,0 +1,6 @@
+allowMissingConfig = false  # Don't terminate the app if the ini file cannot be read.
+allowUnknownFlags = false  # Don't terminate the app if ini file contains unknown flags.
+configUpdateInterval = 0s  # Update interval for re-reading config file set via -config flag. Zero disables config file re-reading.
+dryRun = true  # If set to true, all actions are run except the real filesystem modifications
+imagesRootPath =   # This is the images root path that should be mirrored to piwigo.
+logLevel = info  # The minimum log level required to write out a log message. (panic,fatal,error,warn,info,debug,trace)

internal/app/app.go

@@ -16,7 +16,7 @@ import (
 )
 
 var (
-	imagesRootPath = flag.String("imagesRootPath", "", "This is the images root path that should be mirrored to piwigo.")
+	imagesRootPath = flag.String("imagesRootPath", "", "This is the images root path that should be cleaned.")
 	dryRun         = flag.Bool("dryRun", true, "If set to true, all actions are run except the real filesystem modifications")
 )