Allow adding or removing individual dependencies.

[nssm.git] / README.txt

diff --git a/README.txt b/README.txt
index 182f885..6f9004e 100644 (file)
--- a/README.txt
+++ b/README.txt
@@ -574,6 +574,12 @@ If the application crashes and is restarted by NSSM, the order might be:
   Exit/Post\r
 \r
 \r
+If NSSM is redirecting stdout or stderr it can be configured to redirect\r
+the output of any hooks it runs.  Set AppRedirectHooks to 1 to enable\r
+that functionality.  A hook can of course redirect its own I/O independently\r
+of NSSM.\r
+\r
+\r
 Managing services using the GUI\r
 -------------------------------\r
 NSSM can edit the settings of existing services with the same GUI that is\r
@@ -632,9 +638,10 @@ would have the same effect.
 \r
 Non-standard parameters\r
 -----------------------\r
-The AppEnvironment and AppEnvironmentExtra parameters recognise an\r
-additional argument when querying the environment.  The following syntax\r
-will print all extra environment variables configured for a service\r
+The AppEnvironment, AppEnvironmentExtra and Environment parameters\r
+recognise an additional argument when querying the environment.  The\r
+following syntax will print all extra environment variables configured\r
+for a service\r
 \r
     nssm get <servicename> AppEnvironmentExtra\r
 \r
@@ -649,6 +656,39 @@ KEY=VALUE pair in separate command line arguments.  For example:
 \r
     nssm set <servicename> AppEnvironment CLASSPATH=C:\Classes TEMP=C:\Temp\r
 \r
+Alternatively the KEY can be prefixed with a + or - symbol to respectively\r
+add or remove a pair from the block.\r
+\r
+The following two lines set CLASSPATH and TEMP:\r
+\r
+    nssm set <servicename> AppEnvironment CLASSPATH=C:\Classes\r
+    nssm set <servicename> AppEnvironment +TEMP=C:\Temp\r
+\r
+If the key is already present, specifying +KEY will override the value\r
+while preserving the order of keys:\r
+\r
+    nssm set <servicename> AppEnvironment +CLASSPATH=C:\NewClasses\r
+\r
+The following syntax removes a single variable from the block while\r
+leaving any other variables in place.\r
+\r
+    nssm set <servicename> AppEnvironment -TEMP\r
+\r
+Specifying -KEY=VALUE will remove the variable only if the existing\r
+value matches.\r
+\r
+The following syntax would not remove TEMP=C:\Temp\r
+\r
+    nssm set <servicename> AppEnvironment -TEMP=C:\Work\Temporary\r
+\r
+The + and - symbols are valid characters in environment variables.\r
+The syntax :KEY=VALUE is equivalent to KEY=VALUE and can be used to\r
+set variables which start with +/- or to explicitly reset the block in\r
+a script:\r
+\r
+    nssm set <servicename> AppEnvironment :CLASSPATH=C:\Classes\r
+    nssm set <servicename> AppEnvironment +TEMP=C:\Temp\r
+\r
 \r
 The AppExit parameter requires an additional argument specifying the exit\r
 code to get or set.  The default action can be specified with the string\r
@@ -689,6 +729,34 @@ separate command line arguments.  For example:
 \r
     nssm set <servicename> DependOnService RpcSs LanmanWorkstation\r
 \r
+Alternatively the dependency name can be prefixed with a + or - symbol to\r
+respectively add or remove a dependency.\r
+\r
+The following two lines set dependencies on RpcSs and LanmanWorkstation:\r
+\r
+    nssm set <servicename> DependOnService RpcSs\r
+    nssm set <servicename> DependOnService +LanmanWorkstation\r
+\r
+The follwing syntax removes the dependency on RpcSs:\r
+\r
+    nssm set <servicename> DependOnService -RpcSs\r
+\r
+Service groups should, strictly speaking, be prefixed with the + symbol.\r
+To specify a single dependency on a group, the + symbol can be prefixed\r
+with the : symbol.\r
+\r
+The following lines are equivalent, and each set a dependency ONLY on\r
+NetBIOSGroup:\r
+\r
+    nssm set <servicename> DependOnGroup NetBIOSGroup\r
+    nssm set <servicename> DependOnGroup :NetBIOSGroup\r
+    nssm set <servicename> DependOnGroup :+NetBIOSGroup\r
+\r
+Whereas these lines add to any existing dependencies:\r
+\r
+    nssm set <servicename> DependOnGroup +NetBIOSGroup\r
+    nssm set <servicename> DependOnGroup ++NetBIOSGroup\r
+\r
 \r
 The Name parameter can only be queried, not set.  It returns the service's\r
 registry key name.  This may be useful to know if you take advantage of\r
@@ -892,6 +960,7 @@ Thanks to Stefan and Michael Scherer for reporting a bug writing the event messa
 Thanks to Paul Baxter for help with Visual Studio 2015.\r
 Thanks to Mathias Breiner for help with Visual Studio and some registry fixes.\r
 Thanks to David Bremner for general tidyups.\r
+Thanks to Nabil Redmann for suggesting redirecting hooks' output.\r
 \r
 Licence\r
 -------\r