Removal of Cron Jobs with Timeout

Modified code that removes cron jobs from 3rd-party add-ons so that the cru command call has a timeout to prevent a stuck commands.

Author: Martinski4GitHub

MerlinAU.sh

@@ -4,13 +4,13 @@
 #
 # Original Creation Date: 2023-Oct-01 by @ExtremeFiretop.
 # Official Co-Author: @Martinski W. - Date: 2023-Nov-01
-# Last Modified: 2026-Jun-23
+# Last Modified: 2026-Jul-30
 ###################################################################
 set -u
 
 ## Set version for each Production Release ##
 readonly SCRIPT_VERSION=1.6.6
-readonly SCRIPT_VERSTAG="26073010"
+readonly SCRIPT_VERSTAG="26073018"
 readonly SCRIPT_NAME="MerlinAU"
 ## Set to "master" for Production Releases ##
 SCRIPT_BRANCH="dev"
@@ -8852,24 +8852,48 @@ _Toggle_FW_UpdateCheckSetting_()
 }
 
 ##----------------------------------------##
-## Modified by Martinski W. [2025-Feb-22] ##
+## Modified by Martinski W. [2026-Jul-30] ##
 ##----------------------------------------##
 _RemoveCronJobsFromAddOns_()
 {
-   eval $cronListCmd | grep -E "$cronJobsRegEx1|$cronJobsRegEx2|$cronJobsRegEx3|cronJobsRegEx4|$cronJobsRegEx5|$cronJobsRegEx6" > "$addonCronJobList"
+   eval $cronListCmd | grep -E "$cronJobsRegEx1|$cronJobsRegEx2|$cronJobsRegEx3|$cronJobsRegEx4|$cronJobsRegEx5|$cronJobsRegEx6" > "$addonCronJobList"
    if [ ! -s "$addonCronJobList" ]
    then
        rm -f "$addonCronJobList"
        Say "Cron jobs from 3rd-party add-ons were not found."
        return 1
    fi
 
+   _RemoveCronJobWithTimeout_()
+   {
+      local cruProcID  cruProcOK=false
+      local waitSecsMAX=10  waitSecsCNT=0
+
+      cru d "$1" & cruProcID="$!"
+
+      while [ "$waitSecsCNT" -lt "$waitSecsMAX" ]
+      do
+          sleep 1
+          waitSecsCNT="$((waitSecsCNT + 1))"
+          if ! kill -EXIT "$cruProcID" 2>/dev/null
+          then cruProcOK=true ; break
+          fi
+      done
+
+      if kill -EXIT "$cruProcID" 2>/dev/null
+      then
+          kill -9 "$cruProcID"
+          Say "Wait Timeout [$waitSecsMAX secs] for CRU command expired."
+      fi
+   }
+
    local cronJobCount=0  cronJobIDx  cronJobCMD
 
    while read -r cronJobLINE
    do
       if [ -z "$cronJobLINE" ] || echo "$cronJobLINE" | grep -qE "^[[:blank:]]*#"
-      then continue ; fi
+      then continue
+      fi
       cronJobCount="$((cronJobCount + 1))"
 
       [ "$cronJobCount" -eq 1 ] && \
@@ -8881,7 +8905,7 @@ _RemoveCronJobsFromAddOns_()
 
       if [ -n "$cronJobIDx" ]
       then
-          cru d "$cronJobIDx" ; sleep 1
+          _RemoveCronJobWithTimeout_ "$cronJobIDx"
           if eval $cronListCmd | grep -qE "#${cronJobIDx}#$"
           then Say "**ERROR**: Failed to remove cron job [$cronJobIDx]."
           else Say "Cron job [$cronJobIDx] was removed successfully."

README.md

@@ -1,7 +1,7 @@
 # MerlinAU - AsusWRT-Merlin Firmware Auto Updater
 
-## v1.6.5
-## 2026-June-23
+## v1.6.6
+## 2026-Jul-30
 
 ## WebUI:
 <img width="775" height="1640" alt="image" src="https://github.com/user-attachments/assets/846f889b-b39f-4ffe-a37a-8892ad9b2f7f" />

version.txt

@@ -1 +1 @@
-1.6.5
+1.6.6