diff --git a/check-incs.sh b/check-incs.sh
new file mode 100644
index 0000000..3cd6c36
--- /dev/null
+++ b/check-incs.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+
+EVOBACKUP_CONFIGS="/etc/evobackup/*"
+
+relative_date() {
+    format=$(echo $1 | cut -d'.' -f1)
+    time_jump=$(echo $1 | cut -d'.' -f2)
+ 
+    reference_date=$(date "${format}")
+    past_date=$(date --date "${reference_date} ${time_jump}" +"%Y-%m-%d")
+    
+    echo ${past_date}
+}
+inc_exists() {
+    ls -d /backup/incs/$1 > /dev/null 2>&1 
+}
+jail_exists() {
+    ls -d /backup/jails/$1 > /dev/null 2>&1 
+}
+# default return value is 0 (succes)
+rc=0
+# loop for each configured jail
+for file in ${EVOBACKUP_CONFIGS}; do
+    jail_name=$(basename $file) 
+    # check if jail is present
+    if jail_exists ${jail_name}; then
+        # get jail last configuration date
+        jail_config_age=$(date --date "$(stat -c %y ${file})" +%s)
+        # loop for each line in jail configuration
+        for line in $(cat $file); do
+            # inc date in ISO format
+            inc_date=$(relative_date $line)
+            # inc date in seconds from epoch
+            inc_age=$(date --date "${inc_date}" +%s)
+            # check if the configuration changed after the inc date 
+            if [ $jail_config_age -lt $inc_age ]; then
+                # Error if inc is not found
+                if ! inc_exists ${jail_name}/${inc_date}*; then
+                    echo "ERROR: inc is missing \`${jail_name}/${inc_date}'" >&2
+                    rc=1
+                fi
+            else
+                echo "INFO: no inc expected for ${inc_date} \`${jail_name}'"
+            fi
+        done
+    else
+        echo "ERROR: jail is missing \`${jail_name}'" >&2
+        rc=1
+    fi
+done
+
+exit $rc