cukinia: add cukinia_group

Signed-off-by: Maciej Pijanowski <maciej.pijanowski@3mdeb.com>

README.md

@@ -42,6 +42,7 @@ A cukinia config file supports the following statements:
 ### Test statements
 
 * ``cukinia_user <username>``: Validates that user exists
+* ``cukinia_group <groupname>``: Validates that group exists
 * ``cukinia_process <pname> [user]``: Validates that process runs (optional user)
 * ``cukinia_python_pkg <pkg>``: Validates that Python package is installed
 * ``cukinia_test <expr>``: Validates that test(1) expression is true

cukinia

@@ -20,7 +20,8 @@ GENERIC_FUNCTS='cmd
 		python_pkg
 		symlink
 		test
-		user'
+		user
+		group'
 
 # By default log to stdout
 __log_file="/dev/stdout"
@@ -372,6 +373,15 @@ _cukinia_user()
 	grep -q "^$user:" /etc/passwd
 }
 
+# _cukinia_group: checks if group $1 exists
+_cukinia_group()
+{
+	local group="$1"
+
+	_cukinia_prepare "Checking group \"$group\""
+	grep -q "^$group:" /etc/group
+}
+
 # cukinia_process: checks if process $pname runs
 # Optional: check if the process exist for a given username $puser
 # arg: $1: the process name