core file size linux solaris

If i want to change the size of my core file on linux for the root user and another user that has a homedir how would i do it? if you edit /etc/security/limits.conf do you have to reboot?
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Joseph GanSystem AdminCommented:
I don't think need to reboot, after the change, you need log out and log back in, limits are apply after login as that user.

command to check:

# ulimit -a

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You can also use limit -c corefilesizelimit
On solaris, /etc/system is where you can add system wide limits.
On solaris you would use ulimit -c corefilesizelimit

These apply to core dumps for application, there is a different crash dump configuration.
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