Perform scheduled scripted tasks on SMB devices without crond

[G_W_Albrecht]

In my post Perform scheduled scripted tasks on SMB devices without using crond, tasks on SMB were performed using a remote device. Another possible solution for 11xx/6x0 SMBs is /pfrm2.0/etc/userScript (see sk52520). Started at boot time, it can do a lot for us ! Here, it will reboot the device at a regular time:

date >> /pfrm2.0/etc/lastReboot&
ln -s /bin/busybox /bin/crond
mkdir -p /var/spool/cron/crontabs/
/bin/crond
echo '0 1 * * 0 shutdown -r -t secs 10080 time now&' >> /var/spool/cron/crontabs/root
chmod 600 /var/spool/cron/crontabs/root

In the first line we keep log; then we create a link crond and its crontabs. Now we can call crond and create the crontab with correct access rights. Alternatively, you could run something like the following in userScript:

while true; do if [ "$(date +%H)" == "2" ]; then echo y | reboot; fi; sleep 3600; done

Both methods end with one more process running on the SMB - in the first, many regular jobs can be defined.

[John_Fleming]

Nice write up. 😉

[PhoneBoy]

Am curious if this survives an upgrade 🤔

[John_Fleming]

Should be. That file is kept during upgrades. See below.

[Expert@fw]# pwd
/pfrm2.0/etc
[Expert@fw]# egrep userScript *
additional_settings_file_list:/pfrm2.0/etc/userScript
[Expert@fw]# cd /pfrm2.0/bin

[Expert@fw]# egrep additional_settings_file_list *
image_common.sh:ADDITIONAL_SETTINGS_LIST_FILE=$ROOTFS_DIR/etc/additional_settings_file_list
preboot.sh:ADDITIONAL_FILES_LIST=$INACTIVE_MOUNT_DIR/etc/additional_settings_file_list
restore_default_settings.sh:#delete all the files listed in /pfrm2.0/etc/additional_settings_file_list (which preserved during upgrade) except the /pfrm2.0/etc/*.config files
restore_default_settings.sh:awk '/^[^#]/ && ($1 !~ /\/pfrm2.0\/etc\/.*\.config/) { rm -Rf $1 }' /pfrm2.0/etc/additional_settings_file_list
[Expert@fw]#

[Danny]

👍 +1