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Old 11-18-2014, 11:58 AM   #1
phenriquerangel
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Add user in Cron tab


Hy guys ,
I have a big difficult for add user in cron tab and execute a script with this user. ( any user)

Then , someone can help me?
How proceed I can solve this?

Thank in Advanced.
 
Old 11-18-2014, 12:06 PM   #2
MensaWater
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"crontab -e" if logged in as a given user will create/edit the crontab for that user. It is a vi session and you can add your entries there.

If you're the root user you can use above to modify root's crontab or "crontab -e -u <user>" to specify the user crontab you want to create/edit.

You can type "man 5 crontab" to find out the format of records to create.

Remember any script you run in crontab will need to be self contained with correct environment variables (especially PATH) as cron jobs do NOT login as the user but rather in a minimal environment. Most of the environment for users is created by logins and it won't be there in a cron job unless included in the script.
 
Old 11-18-2014, 01:59 PM   #3
phenriquerangel
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Quote:
Originally Posted by MensaWater View Post
"crontab -e" if logged in as a given user will create/edit the crontab for that user. It is a vi session and you can add your entries there.

If you're the root user you can use above to modify root's crontab or "crontab -e -u <user>" to specify the user crontab you want to create/edit.

You can type "man 5 crontab" to find out the format of records to create.

Remember any script you run in crontab will need to be self contained with correct environment variables (especially PATH) as cron jobs do NOT login as the user but rather in a minimal environment. Most of the environment for users is created by logins and it won't be there in a cron job unless included in the script.

Then , I try for this steps ( just test).

1 - crontab -e -u orasid

2 - 24 16 * * * orasid mkdir /home/teste


And, this folder or file not criated in /home.
 
Old 11-18-2014, 02:07 PM   #4
suicidaleggroll
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Two things:
1) What is "orasid" doing in the command "orasid mkdir /home/teste"? Is that a program? What does it do?
2) Did you wait until 16:24 ?
 
Old 11-18-2014, 02:10 PM   #5
szboardstretcher
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Thats how you specify the username you want the command to run under. 'orasid' is an oracle os username iirc.
 
Old 11-18-2014, 02:20 PM   #6
suicidaleggroll
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But he did "crontab -u orasid", so he's already editing orasid's crontab. I just tried putting my own username in my own crontab, and it threw an error:
Code:
$ crontab -l
* * * * * user touch /home/user/cronfile
a minute later...
Code:
$ mail
N  3 (Cron Daemon)         Tue Nov 18 13:19  25/947   "Cron <user@computer>"
& t

yadda yadda yadda

/bin/sh: user: command not found
 
Old 11-18-2014, 02:43 PM   #7
szboardstretcher
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A few things to note
  • crontab -e will edit the current user's crontab. these crontabs have no 'username' field, as they run as the current user
  • the root crontab needs to use 'su user -c "command"' to specify another user, it has no 'username' field
  • the /etc/crontab and /etc/cron.d/* files support the 'username' field as I mentioned above

http://serverfault.com/questions/352...-specific-user

https://www.freebsd.org/doc/handbook...ning-cron.html

http://insanelabs.com/linux/linux-cr...ystem-reboots/

Last edited by szboardstretcher; 11-18-2014 at 02:44 PM.
 
Old 11-19-2014, 08:31 AM   #8
phenriquerangel
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Quote:
Originally Posted by suicidaleggroll View Post
Two things:
1) What is "orasid" doing in the command "orasid mkdir /home/teste"? Is that a program? What does it do?
2) Did you wait until 16:24 ?

Orasid is a user for oracle in system and yes. I wait for 16:30 , and nothing.
 
Old 11-19-2014, 09:42 AM   #9
szboardstretcher
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As i mentioned,.. if you are editing the user crontab,. which you are,. there is no 'username' field. So remove 'orasid' from the crontab, like this:


Code:
crontab -e -u orasid
24 16 * * * mkdir /home/test
 
Old 11-19-2014, 09:43 AM   #10
phenriquerangel
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Quote:
Originally Posted by szboardstretcher View Post
As i mentioned,.. if you are editing the user crontab,. which you are,. there is no 'username' field. So remove 'orasid' from the crontab, like this:


Code:
crontab -e -u orasid
24 16 * * * mkdir /home/test
Uhn , ok . I'll try and reply.
 
Old 11-19-2014, 09:57 AM   #11
phenriquerangel
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Add user in Cron tab [RESOLVED]

Quote:
Originally Posted by phenriquerangel View Post
Uhn , ok . I'll try and reply.

Thank you guys. I could create a script that works.



Steps

1 - Log for root , before log in user ( su - <user>) .

2 - Before that , create a crontab " crontab -e " . ( Logged in your user, not root)

3 - Create a script " 46 13 * * * touch /home/teste " ( minute hour mday month wday command ) , don't set user again.

OBS: Check the PERMINSSION in the folder.
 
  


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