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* [9fans] cron job
@ 2021-09-05  7:52 有澤 健治
  2021-09-05 11:20 ` [9fans] " 有澤 健治
  0 siblings, 1 reply; 2+ messages in thread
From: 有澤 健治 @ 2021-09-05  7:52 UTC (permalink / raw)
  To: 9fans

Hello all,

I noticed what I donn't understand.


Let alice be a user of a system hebe,
and try an experiment on cron job.

STEP 1.
make /usr/alice/tmp/T that looks like:
hebe# ls -dl /usr/alice/tmp/T
d-rwxrwxrwx M 24 alice alice 0 Sep  3 01:00 /usr/alice/tmp/T
hebe#

STEP 2.
make a rc script /usr/alice/bin/rc/touchtest:
#!/bin/rc
rfork e
d=/usr/alice/tmp/T
t=`{date -n}
touch $d/$t

STEP 3.
make a cron job for alice on /cron/alice/cron such that:
0,10,20,30,40,50 * * * * local /usr/alice/bin/rc/touchtest

STEP 4.
observe files in /usr/alice/tmp/T
and you can confirm, owner of created files is hostowner, not alice.
my case:
hebe% cd /usr/alice/tmp
hebe% ls -l T
--rw-rw-rw- M 195329 arisawa alice 0 Sep  3 00:40 T/1630597201
--rw-rw-rw- M 195329 arisawa alice 0 Sep  3 00:50 T/1630597801
--rw-rw-rw- M 195329 arisawa alice 0 Sep  3 01:00 T/1630598401
hebe%

where "arisawa" is the hostowner of "hebe".
Is this reasonable ?

additional info:
hebe# ps | grep cron
arisawa         366    0:00   0:00      128K Sleep    cron
hebe#

Kenji Arisawa


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^ permalink raw reply	[flat|nested] 2+ messages in thread

* [9fans] Re: cron job
  2021-09-05  7:52 [9fans] cron job 有澤 健治
@ 2021-09-05 11:20 ` 有澤 健治
  0 siblings, 0 replies; 2+ messages in thread
From: 有澤 健治 @ 2021-09-05 11:20 UTC (permalink / raw)
  To: 9fans

Sorry the following mail should be sent to 9front mailing list.


On 2021/09/05 16:52, 有澤 健治 wrote:
> Hello all,
>
> I noticed what I donn't understand.
>
> Let alice be a user of a system hebe,
> and try an experiment on cron job.
>
> STEP 1.
> make /usr/alice/tmp/T that looks like:
> hebe# ls -dl /usr/alice/tmp/T
> d-rwxrwxrwx M 24 alice alice 0 Sep  3 01:00 /usr/alice/tmp/T
> hebe#
>
> STEP 2.
> make a rc script /usr/alice/bin/rc/touchtest:
> #!/bin/rc
> rfork e
> d=/usr/alice/tmp/T
> t=`{date -n}
> touch $d/$t
>
> STEP 3.
> make a cron job for alice on /cron/alice/cron such that:
> 0,10,20,30,40,50 * * * * local /usr/alice/bin/rc/touchtest
>
> STEP 4.
> observe files in /usr/alice/tmp/T
> and you can confirm, owner of created files is hostowner, not alice.
> my case:
> hebe% cd /usr/alice/tmp
> hebe% ls -l T
> --rw-rw-rw- M 195329 arisawa alice 0 Sep  3 00:40 T/1630597201
> --rw-rw-rw- M 195329 arisawa alice 0 Sep  3 00:50 T/1630597801
> --rw-rw-rw- M 195329 arisawa alice 0 Sep  3 01:00 T/1630598401
> hebe%
>
> where "arisawa" is the hostowner of "hebe".
> Is this reasonable ?
>
> additional info:
> hebe# ps | grep cron
> arisawa         366    0:00   0:00      128K Sleep    cron
> hebe#
>
> Kenji Arisawa
>

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^ permalink raw reply	[flat|nested] 2+ messages in thread

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