How do I free up space on Redhat Linux?
Clear disk space on CentOS/RHEL 6, 7, 8
- Trim log files.
- Cleanup YUM cache.
- Remove orphan packages.
- Remove WP CLI cached WordPress downloads.
- Remove old kernels.
- Remove Composer cache.
- Remove core dumps.
- Remove error_log files (cPanel)
How do I see core dumps in Linux?
How to get a core dump
- Run ulimit -c unlimited before starting my program.
- Run sudo sysctl -w kernel. core_pattern=/tmp/core-%e. %p. %h. %t.
Where is all my storage going Linux?
To find out where disk space is being used:
- Get to the root of your machine by running cd /
- Run sudo du -h –max-depth=1.
- Note which directories are using a lot of disk space.
- cd into one of the big directories.
- Run ls -l to see which files are using a lot of space. Delete any you don’t need.
- Repeat steps 2 to 5.
Where do I find the core dump in Ubuntu?
In Ubuntu the core dumps are handled by Apport and can be located in /var/crash/. However, it is disabled by default in stable releases. For more details, please check: Where do I find the core dump in Ubuntu?.
How big should a core dump be in Bash?
You can specify a size such as 52M instead of unlimited if you want, but in practice this shouldn’t be necessary since the size of core files will probably never be an issue for you. As explained above the real question being asked here is how to enable core dumps on a system where they are not enabled.
How to generate a core dump in Linux on a hung process?
If you’ve come here hoping to learn how to generate a core dump for a hung process, the answer is Don’t use kill -SEGV as that will often invoke a signal handler making it harder to diagnose the stuck process To check where the core dumps are generated, run: where %e is the process name and %t the system time.
Where is kdump installed in Red Hat Enterprise Linux?
In previous releases of Red Hat Enterprise Linux, kdump configuration was available in the Firstboot utility which was automatically executed after the installation finished and the system rebooted for the first time. Starting with Red Hat Enterprise Linux 7.1, kdump configuration has been moved into the installer.