disk space

Linux Disable Core Dumps

by on February 26, 2009 · 6 comments

Only software developers legitimately need to access core files and none of my production web server requires a core dump. How do I disable core dumps on Debian / CentOS / RHEL / Fedora Linux to save large amounts of disk space?

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Q. I’ve Debian Linux installed on 10 GB hard disk and noticed that /var/cache/apt/archives/ has lots of file taking my precious 1Gb disk space. Can I remove those file safely without causing any side effect on my setup?

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How do I find and/or monitor disk space in your ZFS storage pool and file systems under FreeBSD or Solaris / OpenSolaris UNIX operating systems?

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Q. I’d like to save disk space for my FreeBSD 7 ISP server. We run webserver, nameserver from various jails under powerful HP RAID 10 server. How do I export /usr/ports from host to each jail hosted on /jail/ volume such as /jail/www, /jail/ns, /jail/sql etc?

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Q. I’m trying to login to my remote Ubuntu Linux server from Mac OS X desktop using following command:
ssh -X user@vpn.officeserver.example.com xeyes

But I’m getting an error that read as follows:

X11 connection rejected because of wrong authentication.

How do I fix this error?

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How do I create 1 GB or 10 GB image file instantly with dd command under UNIX / Linux / BSD operating systems using a shell prompt?

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Q. I’m not able to run nslookup or host command under Debian or Ubuntu Linux. In fact, these commands are missing from my installation. How do I install nslookup and related dns client commands?

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