Why my crontab doesn't work?

Installing and Using OpenWrt
21

Ok, will check it tomorrow. At this moment:

root@mikrotik:~# ls -l /etc/banner
-rw-r--r--    1 root     root           400 Sep  3 19:20 /etc/banner

Bingo!!! No crontab in the ps

root@mikrotik:~# ps | grep -i [c]ron
root@mikrotik:~#

# As example
root@mikrotik:~# ps | grep -i [p]rocd
    1 root      1396 S    /sbin/procd
root@mikrotik:~#

crontab is missing in the package database?

# ls -1
Packages*
Packages.gz*
Packages.manifest*
Packages.sig*
base-files_227-r14382+8-ad0f0df909_arm_cortex-a7_neon-vfpv4.ipk*
fstools_2020-07-11-53453438-1_arm_cortex-a7_neon-vfpv4.ipk*
fwtool_2019-11-12-8f7fe925-1_arm_cortex-a7_neon-vfpv4.ipk*
ip6tables_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
ipq-wifi-mikrotik_hap-ac2_1_arm_cortex-a7_neon-vfpv4.ipk*
iptables-mod-conntrack-extra_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
iptables-mod-ipopt_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
iptables_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
iwinfo_2020-06-03-2faa20e5-1_arm_cortex-a7_neon-vfpv4.ipk*
kernel_5.4.61-1-41e19062715338a67f255de2b91e2bd2_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ath10k-ct-smallbuffers_5.4.61+2020-06-30-edfbf916-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ath_5.4.61+5.8-1-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-cfg80211_5.4.61+5.8-1-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-gpio-button-hotplug_5.4.61-3_arm_cortex-a7_neon-vfpv4.ipk*
kmod-hwmon-core_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ifb_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ip6tables_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-conntrack-extra_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-conntrack_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-core_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-ipopt_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-nat_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-offload_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ipt-raw_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-leds-gpio_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ledtrig-default-on_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ledtrig-heartbeat_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ledtrig-netdev_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ledtrig-timer_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-lib-crc-ccitt_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-mac80211_5.4.61+5.8-1-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-conntrack6_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-conntrack_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-flow_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-ipt6_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-ipt_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-nat_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-reject6_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nf-reject_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-nls-base_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-ppp_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-pppoe_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-pppox_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-sched-cake_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-sched-core_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-slhc_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-usb-core_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-usb-dwc3-qcom_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-usb-dwc3_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
kmod-usb3_5.4.61-1_arm_cortex-a7_neon-vfpv4.ipk*
libc_1.1.24-2_arm_cortex-a7_neon-vfpv4.ipk*
libgcc1_8.4.0-2_arm_cortex-a7_neon-vfpv4.ipk*
libip4tc2_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
libip6tc2_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
libiwinfo-lua_2020-06-03-2faa20e5-1_arm_cortex-a7_neon-vfpv4.ipk*
libiwinfo20200105_2020-06-03-2faa20e5-1_arm_cortex-a7_neon-vfpv4.ipk*
libpthread_1.1.24-2_arm_cortex-a7_neon-vfpv4.ipk*
libxtables12_1.8.4-1_arm_cortex-a7_neon-vfpv4.ipk*
mtd_26_arm_cortex-a7_neon-vfpv4.ipk*
ubi-utils_2.1.2-1_arm_cortex-a7_neon-vfpv4.ipk*
22

It is part of busybox, not separate package.

  1. See script in ls /etc/rc.d/*cron*
  2. See contents of /etc/crontabs/
23 
root@mikrotik:~# ls /etc/rc.d/*cron*
/etc/rc.d/S50cron

root@mikrotik:~# ls -l /usr/sbin/crond
lrwxrwxrwx    1 root     root            17 Sep  3 19:20 /usr/sbin/crond -> ../../bin/busybox

root@mikrotik:~# ls -l /etc/crontabs/
-rw-------    1 root     root           105 Sep  7 08:51 root

root@mikrotik:~# crontab -l
10 22 * * * sleep 70 && touch /etc/banner && reboot
15 22 * * * /sbin/wifi down
15 6 * * * /sbin/wifi up

root@mikrotik:~# ps | grep -i cron
  975 root      1100 S    /usr/sbin/crond -f -c /etc/crontabs -l 5
 3274 root      1096 R    grep -i cron

root@mikrotik:~# ls -l /etc/banner
-rw-r--r--    1 root     root           400 Sep  3 19:20 /etc/banner
root@mikrotik:~#

/etc/banner is have the same time and date (look at my previous post)

24

OK, delete '/etc/banner', and check again:

10 22 * * * touch /etc/banner

Does it work?

25

You properly had cron earlier in your screenshot's process list.
kuva

Something has changed since then ???

Have you remembered to enable the crontab service at startup?

2 Likes
26

[SLOVED]
Works like a charm , though.

0 22 * * * reboot
15 22 * * * /sbin/wifi down
15 6 * * * /sbin/wifi up

This stuck on the touch /etc/banner

27

I just checked myself:

10 11 * * * sleep 70 && touch /etc/banner && logger "cronjob successfully executed"

This results in the job being successfully executed:

Wed Sep  9 11:10:00 2020 cron.info crond[9142]: USER root pid 9149 cmd sleep 70 && touch /etc/banner && logger "cronjob successfully executed"
Wed Sep  9 11:11:10 2020 user.notice root: cronjob successfully executed

Have you tried restarting cron after you have edited the crontab?

1 Like
28

No. I did not do anything.

29

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