On 12 Aug 2019, at 04:48, ToddAndMargo via users
<users(a)lists.fedoraproject.org> wrote:
> On 8/11/19 6:01 PM, Sam Varshavchik wrote:
> ToddAndMargo via users writes:
>> Hi All,
>>
>> I have no idea what this tells me
>>
>> $ cat /proc/sys/kernel/core_pattern
>> |/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e
>>
>> Does anyone know of a list somewhere?
> Would you believe the proc manual page, which directs you to the core manual page?
>> And why does it send out a pipe symbol?
> To indicate that the core file is an external program.
>>
>> What does this do?
>>
>> # echo core > /proc/sys/kernel/core_pattern
>>
>> Will "core" turn on core dumps?
> The core dumps are already turned on, except that they are fed to abrt, which stashes
them away. This will, instead, create a plain file called "core" in the
executable's directory.
>> And if so, how do I turn it back off after testing it?
>>
>> And will it wipe out "%P %u %g %s %t %c %h %e"?
> Set it back to what it was.
> echo '|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e'
>/proc/sys/kernel/core_pattern
> Now, if you really want a core file, you don't really have to do any of that. You
can leave core_pattern at its default value, and just pull the core file down, upon
demand. I have a small shell script in my $HOME/bin directory:
> $ cat ~/bin/core
> #!/bin/bash
> exec coredumpctl -o core dump
> And after something dumps core, I just execute "core", and the core file
appears in my current directory.
Thank you!
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