mjhjmtu

I am trying to set up a cron job, by creating a file /etc/cron.d/myjob:

55 * * * * t echo hello > /tmp/cron.log && cd /tmp/test/ && pwd > /tmp/cron.log

I tried to verify if the job is scheduled successfully, by using the redirections. I created the file at 21:50, and when 5 minutes later i.e. it is 21:55, there is still no /tmp/cron.log created. I was wondering why?

I specify the user to be t for the job in /etc/cron.d/myjob. But whose is the cron job? I am not sure about it, so I tried the two commands below. Neither shows the job I created.

$ crontab -l
no crontab for t
$ sudo crontab -l
[sudo] password for t: 
no crontab for root

My /etc/crontab doesn't explicitly read from the files under /etc/cron.d/. See below. Can that be the reason that my cron job isn't running? Thanks.

# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user command
17 * * * * root cd / && run-parts --report /etc/cron.hourly
25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#