ulimit generates the error: cannot modify limit: Operation not permitted

Solution Verified - Updated -

Issue

  • Do you know why the second set to unlimited fails?
prod@bigbox(~)$ ulimit -c unlimited
prod@bigbox(~)$ ulimit -c 4000000
prod@bigbox(~)$ ulimit -c unlimited
-bash: ulimit: core file size: cannot modify limit: Operation not permitted

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

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