Determine what’s using swap space on linux
I found this useful shell script on a website a while back; works perfectly: The output will look like this:
Category: Linux
Mounting an Amazon S3 bucket into a CentOS 6 filesystem
Fortunately this is far easier to do on CentOS 6 than it is on CentOS 4. If you do need the CentOS 4 directions, those are located here. Prerequisites for Continue Reading…
Microsoft Office Assistant for vi
ROFL, Clippy is here to help with regular expressions!
Background a running process and log out without it dying off
Not that this is some magical new development, it’s probably been around for decades, but I find there’s often things I don’t come across until I need them and then Continue Reading…
Sum a column of numbers from unix command line
Ever have some kind of text file or command output where you want to just get a sum of the numbers presented? If it’s a single column, just pipe it Continue Reading…
Mounting an S3 filesystem on Amazon from a CentOS 4 using FUSE/s3fs
Well this was more of a challenge than expected. A customer had an old CentOS 4 server with about a terabyte of data on it that was by itself at Continue Reading…
Find directories on a server with the most files per directory
This command will go through your entire server, count the number of files per directory, then output the list sorted: The output will look like: 100 ; /path/to/directory 200 ; Continue Reading…
Statically configuring IPv6 address & gateway on CentOS/RHEL
By default RHEL/CentOS 5 and 6 have SLAAC enabled, to automatically configure IPv6 addresses if a router advertisement is received on an interface. I find this VERY undesirable on a Continue Reading…
Disabling IPv6 on CentOS
I’ve seen a number of online articles on disabling IPv6 and they often involve blacklisting kernel modules, etc. which is a really bad idea. In most cases it does not Continue Reading…
Installing CPAN modules for perl
Some of the scripts I’ve written and posted on this site require various CPAN modules to be present on the system where the scripts are used. For the benefit of Continue Reading…