k_suchdeva
asked on
Restart Scripts
I have a machine with following configuration
SunOS XXXXXXXXXXX 5.7 Generic_106541-16 sun4u sparc SUNW,Ultra-80
I intent to put some restarts scripts in place so that i can start the processes that were running on the machine in case of a accidental shutdown.
I tried puttting stuff in in /etc/rc3.d but it does not seem to work.
I renamed the script to start with S but still no luck.
Can somebody advise whether this is the right approach ?
Also the scripts in /rc3.d will run with root privileges but i want to run the processes as some other user.
So for that if i do su - <login_name> in the script the next command in the script will not be run by the user it will be still run by root.
So please advise what is the most recommended approach that people tend to follow in these cases.
Thanks in advance.
Khem
SunOS XXXXXXXXXXX 5.7 Generic_106541-16 sun4u sparc SUNW,Ultra-80
I intent to put some restarts scripts in place so that i can start the processes that were running on the machine in case of a accidental shutdown.
I tried puttting stuff in in /etc/rc3.d but it does not seem to work.
I renamed the script to start with S but still no luck.
Can somebody advise whether this is the right approach ?
Also the scripts in /rc3.d will run with root privileges but i want to run the processes as some other user.
So for that if i do su - <login_name> in the script the next command in the script will not be run by the user it will be still run by root.
So please advise what is the most recommended approach that people tend to follow in these cases.
Thanks in advance.
Khem
ASKER
>>where nn is a number: 00 .. 99
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
ASKER
>>where nn is a number: 00 .. 99
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
> what does the number indicate and how does it matter.
the scripts are called in ascending order of this number by init
So you need to take care if your script depends on others (like a web server depends on network, then the number for the network scriot must be lower to that of the web server script)
> How can i start the script with a user X by putting it in a the directory rc3.d/,
simply call the script when logged in as user X
> they will always run as root user.
NO. they run as the user which called them. In fact that's root while booting.
Or do you mean that the scripts should run as user X while booting?
the scripts are called in ascending order of this number by init
So you need to take care if your script depends on others (like a web server depends on network, then the number for the network scriot must be lower to that of the web server script)
> How can i start the script with a user X by putting it in a the directory rc3.d/,
simply call the script when logged in as user X
> they will always run as root user.
NO. they run as the user which called them. In fact that's root while booting.
Or do you mean that the scripts should run as user X while booting?
ASKER
>>where nn is a number: 00 .. 99
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
>>ANYNAME is any scriptname
what does the number indicate and how does it matter.
>>Also the scripts in /rc3.d will run with root privileges >>but i want to run the processes as some other
>>user.
>>So for that if i do su - <login_name> in the script the >>next command in the script will not be run by
>>the user it will be still run by root.
Any inputs about that, i didn't really follow ur explanation about that.
How can i start the script with a user X by putting it in a the directory rc3.d/, they will always run as root user.
Thanks
Khem
ASKER
I need the scripts to start some process for some user while startup.
While startup i won't be logged into the machine to run the scripts that's why they are boot up scripts.
So i want the scripts to run automatically when the machines boots.
I have the scripts, i know the user which should be used to run the scripts but i don't know how do i put it.
i hope this clarify my question.
While startup i won't be logged into the machine to run the scripts that's why they are boot up scripts.
So i want the scripts to run automatically when the machines boots.
I have the scripts, i know the user which should be used to run the scripts but i don't know how do i put it.
i hope this clarify my question.
build a simple script in /etc/rc3.d from the skeleton file there (or in /etc/init.d). In the 'start' section there call your special script with su. Fro example:
#! /bin/sh
case $1 in
'start')
su userX -c /path/to/your-script
;;
'stop')
;;
esac
exit 0
#! /bin/sh
case $1 in
'start')
su userX -c /path/to/your-script
;;
'stop')
;;
esac
exit 0
ASKER
I need the scripts to start some process for some user while startup.
While startup i won't be logged into the machine to run the scripts that's why they are boot up scripts.
So i want the scripts to run automatically when the machines boots.
I have the scripts, i know the user which should be used to run the scripts but i don't know how do i put it.
i hope this clarify my question.
While startup i won't be logged into the machine to run the scripts that's why they are boot up scripts.
So i want the scripts to run automatically when the machines boots.
I have the scripts, i know the user which should be used to run the scripts but i don't know how do i put it.
i hope this clarify my question.
ASKER
Why it posts all my comments twice.
I got it now.
WIll get back to you after i try that.
I got it now.
WIll get back to you after i try that.
ASKER
when i do like that
su userX -c /path/to/your-script
it my env variables are not set because .profile is not being executed.
any switch which will force this command to execute .profile as well ?
i can always put .profile in my script but i am not considering that.
su userX -c /path/to/your-script
it my env variables are not set because .profile is not being executed.
any switch which will force this command to execute .profile as well ?
i can always put .profile in my script but i am not considering that.
ASKER
when i do like that
su userX -c /path/to/your-script
it my env variables are not set because .profile is not being executed.
any switch which will force this command to execute .profile as well ?
i can always put .profile in my script but i am not considering that.
su userX -c /path/to/your-script
it my env variables are not set because .profile is not being executed.
any switch which will force this command to execute .profile as well ?
i can always put .profile in my script but i am not considering that.
su - userX ....
ASKER
nope it is syntactically wrong
i tried that already
i tried that already
could you please post the message
Khem,
Start by creating a file in the /etc/init.d directory and name it something; program1, for instance
Next, create the structure in the file shown below
#!/sbin/sh
#
# Written by Stephen Haynes
# All rights reserved
#
Variable=value
case "$1" in
'start')
if [ SOMETHING ]; then
(Insert your startup line here)
fi
;;
'stop')
if [ SOMETHING ]; then
(Insert your shutdown line here)
fi
;;
*)
echo "Usage: $0 { start | stop }"
exit 1
;;
esac
exit 0
Create the following links:
cd /etc/rc0.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc1.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc2.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc3.d; ln -s /etc/init.d/program1 S98program1
cd /etc/rcS.d; ln -s /etc/init.d/program1 K98program1
The links above will ensure that your code will run while in Run Level 3 (default) and be terminated when switching to any other Run Level (nicely).
To run a command or script as another user, do this:
su - USER -c "script" &
The dash will execute the users profile, the -c will run the named script and the quotations may or may not be necessary (I run a few scripts as CRON jobs)
Cheers,
Stephen
Start by creating a file in the /etc/init.d directory and name it something; program1, for instance
Next, create the structure in the file shown below
#!/sbin/sh
#
# Written by Stephen Haynes
# All rights reserved
#
Variable=value
case "$1" in
'start')
if [ SOMETHING ]; then
(Insert your startup line here)
fi
;;
'stop')
if [ SOMETHING ]; then
(Insert your shutdown line here)
fi
;;
*)
echo "Usage: $0 { start | stop }"
exit 1
;;
esac
exit 0
Create the following links:
cd /etc/rc0.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc1.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc2.d; ln -s /etc/init.d/program1 K98program1
cd /etc/rc3.d; ln -s /etc/init.d/program1 S98program1
cd /etc/rcS.d; ln -s /etc/init.d/program1 K98program1
The links above will ensure that your code will run while in Run Level 3 (default) and be terminated when switching to any other Run Level (nicely).
To run a command or script as another user, do this:
su - USER -c "script" &
The dash will execute the users profile, the -c will run the named script and the quotations may or may not be necessary (I run a few scripts as CRON jobs)
Cheers,
Stephen
ASKER
Hi Stephen
Thanks for the detailed explanation.
I really appreciate that.
But you are a bit late for points.
All the information you provided is there in ahoffmann comments in bits and pieces.
So please take ur answer back so that i can accept ahoffman comments and answer.
Thanks and Regards
Khem
Thanks for the detailed explanation.
I really appreciate that.
But you are a bit late for points.
All the information you provided is there in ahoffmann comments in bits and pieces.
So please take ur answer back so that i can accept ahoffman comments and answer.
Thanks and Regards
Khem
Khem,
I have tried to take back, but unable to. Sorry.
Stephen
I have tried to take back, but unable to. Sorry.
Stephen
Khem, you have to reject a proposed answer, then you can accept another comment as answer.
Khem and ahoffman,
I have asked a mediator to look into this. Frankly, I am only a week into EE, and am suprised by the lack of guidelines on how to do this. I can't believe that a questioner can reject an answer after having received it so easily. What is to stop someone from getting the answer and awarding no points for it? I am also curious as to the possibility of splitting points between commentors (if it is possible). I have a question on the boards for the last week that has not been commented on, so I cannot see how that end of it works.
https://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=commspt&qid=20316161
Here is a link to the question I posted in Community Support.
I have asked a mediator to look into this. Frankly, I am only a week into EE, and am suprised by the lack of guidelines on how to do this. I can't believe that a questioner can reject an answer after having received it so easily. What is to stop someone from getting the answer and awarding no points for it? I am also curious as to the possibility of splitting points between commentors (if it is possible). I have a question on the boards for the last week that has not been commented on, so I cannot see how that end of it works.
https://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=commspt&qid=20316161
Here is a link to the question I posted in Community Support.
Proposed answer rejected. Would like like to award an expert or split points with other experts?
Thanks
Computer101
E-E Moderator
Thanks
Computer101
E-E Moderator
ASKER CERTIFIED SOLUTION
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just to avoid confuision of future readers:
the answer can be founf in my 1'st and 2'nd comment (not the graded answer;-)
the answer can be founf in my 1'st and 2'nd comment (not the graded answer;-)
SnnANYNAME
KnnANYNAME
where nn is a number: 00 .. 99
ANYNAME is any scriptname
The S* scripts are called when the systems enters runlevel 3 (for example with: init 3), the K* scripts are called when the system leaves runlevel 3. The S* scripts are called with the start parameter, the K* scripts with the stop parameter.
You may start these sripts at any time. This can be done by any user if this user has sufficent permissions to read and executes these scripts.