Pages
-
Recent Posts
- Revolving Door: MPAA Hires Chief USTR Negotiator Behind ACTA And TPP’s IP Chapter
- Copyright Maximalists’ Incredible Sense Of Entitlement: If It Challenges The Biz Model We Chose, It Must Be Illegal
- Turkey’s Prime Minister Sues His Own Country Over Twitter
- Picturefill 2
- Police File On Student ‘Bullied Into Committing Suicide’ Strangely Lacking In Evidence Of Bullying
Archives
- April 2014
- March 2014
- February 2014
- January 2014
- December 2013
- November 2013
- October 2013
- September 2013
- August 2013
- July 2013
- June 2013
- May 2013
- April 2013
- March 2013
- February 2013
- January 2013
- December 2012
- November 2012
- October 2012
- September 2012
- August 2012
- July 2012
- June 2012
- May 2012
- April 2012
- March 2012
- February 2012
- January 2012
- December 2011
- November 2011
- October 2011
- September 2011
- August 2011
- July 2011
- June 2011
- May 2011
- April 2011
- March 2011
- February 2011
- January 2011
- December 2010
- November 2010
- October 2010
- September 2010
- August 2010
- July 2010
- June 2010
- May 2010
- April 2010
- March 2010
- February 2010
- January 2010
- December 2009
- November 2009
- October 2009
- September 2009
- August 2009
- July 2009
- June 2009
- May 2009
- April 2009
- March 2009
- February 2009
- December 2008
- November 2008
- October 2008
Meta
Category Archives: sysadmin
PHPHOST BLOG
Web Hosting Related Articles You May Need
[one-liner]: Using the Linux Command, dirsplit, to Dynamically Backup a Directory Over Multiple DVDs
Background
At my day job I deal with a fair amount of image data. We typically are shipping the data out on either hard drives, thumb drives, or via SFTP. On occasion we will some times burn it to a CD and/or a DVD. But until today all the data was either large sets (200-400GB) variety, […] Continue reading
[one-liner]: Using the Command lsb_release to Determine Linux Distro Version Info
Background
If you need to determine which version of Linux you’re using you can use the command lsb_release. It’s part of the Linux Standards Base which is a specification that was created by the Linux Foundation.
Solution
Obviously there are other ways to do this, for example, on a Redhat based system you can look for the file […] Continue reading
Posted in linux, LSB, one-liner, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: Using the Command lsb_release to Determine Linux Distro Version Info
How to Analyze Network Performance using iperf on Fedora, CentOS & Windows
I’ve been experiencing some slow network connections between a couple of Linux systems (CentOS), Window systems (Server 2008R2), and a NAS device (Netgear ReadyNAS) and wanted to confirm that my network connections weren’t the source of the problem. To limit any variability due to different tools, I decided to use iperf, which can run on […] Continue reading
Posted in centos, fedora, linux, networking, performance, redhat, rhel, Syndicated, sysadmin, tips & tricks, windows
Comments Off on How to Analyze Network Performance using iperf on Fedora, CentOS & Windows
[one-liner]: Redirecting an Already Running Program’s STDOUT to a File using dupx
Background
Recently I came across this really cool UNIX tool called dupx. I was looking for a way to connect to a program’s STDOUT and STDERR after I had already started it. This was a long running, think 30+ hours job, and I didn’t want to have to stop and restart it. As is the case […] Continue reading
Posted in centos, fedora, linux, one-liner, rhel, shell, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: Redirecting an Already Running Program’s STDOUT to a File using dupx
[one-liner]: Archving a Directory Tree into a CD or DVD via the Command Line Using mkisofs on Fedora 14 & CentOS 5
Background
Recently I was putting together a script to build an archive of all the various files that a project was comprised from. One of the final tasks was to burn the entire lot of files to a CD or DVD, so I took the opportunity to figure out how to do this from the command […] Continue reading
Posted in cd, centos, DVD, fedora, one-liner, redhat, rhel, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: Archving a Directory Tree into a CD or DVD via the Command Line Using mkisofs on Fedora 14 & CentOS 5
[one-liner]: Why is awk skipping the first line?
Background
I’ve used AWK for years but never had a reason to use it to split on anything except spaces until now. Hard to believe but I usually use sed to convert the separator characters to spaces.
1
2
# sed example
echo "this|is|a|string" | sed ‘s/|/ /g’
So I was trying to use AWK’s field separator variable, FS but […] Continue reading
Posted in awk, one-liner, shell, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: Why is awk skipping the first line?
[one-liner]: Command-line Fu … Useful Linux Commands (repost)
Background
Came across these commands on another blog and wanted to create my own personal copy of these useful command-line examples.
Commands
1
2
3
4
% sshfs name@server:/path/to/folder /path/to/mount/point
# Mount folder/filesystem through SSH
# Install SSHFS from http://fuse.sourceforge.net/sshfs.html
# Will allow you to mount a folder security over a network.
1
2
3
4
5
% !!:gs/foo/bar
# Runs previous command replacing foo by bar every time that foo appears
# […] Continue reading
Posted in linux, one-liner, shell, Syndicated, sysadmin, tip, tips & tricks
Comments Off on [one-liner]: Command-line Fu … Useful Linux Commands (repost)
[one-liner]: How to Change the Hostname on a Fedora/CentOS/RHEL System
Background
Changing your system’s hostname is probably one of the most confusing things to do on a Redhat based Linux system. Turns out there are several ways to do it, part of the reason why it’s so confusing … I guess. Here’s my attempt to capture as many of them that I’m aware of.
Solution
There are essentially […] Continue reading
Posted in centos, fedora, linux, one-liner, redhat, rhel, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: How to Change the Hostname on a Fedora/CentOS/RHEL System
[one-liner]: Managing RPM Repo GPG keys on a RPM base Distro (Fedora/CentOS/RHEL)
Background
Occasionally you might need to remove an RPM GPG signing key from your system. These are the keys that typically get installed using a command similar to this:
1
rpm –import http://packages.atrpms.net/RPM-GPG-KEY.atrpms
Turns out they’re pretty easy to remove….
Solution
The key is to understand that most of the same commands that you’d use to query your RPM database apply […] Continue reading
Posted in centos, fedora, linux, one-liner, package management, redhat, rhel, rpm, Syndicated, sysadmin, tips & tricks
Comments Off on [one-liner]: Managing RPM Repo GPG keys on a RPM base Distro (Fedora/CentOS/RHEL)
[one-liner]: Can’t Connect to VMware Server 2.x from Internet Explorer 8
Background
Recently I ran into a problem where I wasn’t able to connect to a VMware Server from IE 8. I was getting an error message that didn’t give me much to go on. Basically IE displayed a blank page and there was a little yellow exclamation point in the lower left corner of IE.
<p […] Continue reading
Posted in one-liner, Syndicated, sysadmin, tip, tips & tricks, vmware
Comments Off on [one-liner]: Can’t Connect to VMware Server 2.x from Internet Explorer 8
LATEST NEWS
