Monthly Archives: July 2017

Renaming a folder en-mass

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I was figuring out a way to rename a folder en-mass which took me a few seconds, instead of about an hour of clicking.

Linux automation is a win.

# mmv "Documentary - National Geometry series-*.avi" "#1.avi"

I had some old tv series but they were all prefixed with the same filename ‘Documentary – National Geometry series’ before their volume number and title. So I found the above command to strip that out for all 100 of them, in a single command. Basically #1 is where * is in the source command regular expression, so everything after the source expression and between the *.

It’s a really nice utility and preferred on BSD systems to perl rename imo

Using Freebsd unrar utility properly and extracting recursively

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I noticed I had a lot of unrarred files and needed a way to completely unrar everything in a folder. I noticed a lot of the examples on the internets didnt work.

find Archive/ -name '*.part01.rar' -execdir unrar e {} \;

This basically hunts out all directories below Archive/ and extracts all archives starting with part01.rar, the problem with examples I found is they used regex for *.rar or unrar’s -r recursive feature which in my BSD system seemed not best way to do this.

I was pleased with the oneliner though. It might be useful for people with freenas systems.

Apache2 Module installed but not loaded

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I came across a customer recently that had a module installed on their apache2 installation, but they couldn’t understand why it wasn’t loaded. In this case it was the filter module.

[root@box ~]# yum provides /usr/lib64/httpd/modules/mod_filter.so
Loaded plugins: fastestmirror, replace
Loading mirror speeds from cached hostfile
drivesrvr                                                                                                                                                                                                            | 2.2 kB     00:00
httpd-2.2.15-59.el6.centos.x86_64 : Apache HTTP Server
Repo        : base
Matched from:
Filename    : /usr/lib64/httpd/modules/mod_filter.so



httpd24u-2.4.27-1.ius.centos6.x86_64 : Apache HTTP Server
Repo        : ius
Matched from:
Filename    : /usr/lib64/httpd/modules/mod_filter.so



httpd-2.2.15-60.el6.centos.4.x86_64 : Apache HTTP Server
Repo        : updates
Matched from:
Filename    : /usr/lib64/httpd/modules/mod_filter.so



httpd-2.2.15-60.el6.centos.4.x86_64 : Apache HTTP Server
Repo        : installed
Matched from:
Other       : Provides-match: /usr/lib64/httpd/modules/mod_filter.so


You can activated it by adding following line to httpd.conf;

It was simple to install just throw this in your httpd.conf

LoadModule filter_module modules/mod_filter.so

Job done.

Retrieving Process List from Rackspace Cloud Server Monitoring

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It is possible for you to use the Rackspace API to retrieve the Running Process List of a Cloud-server on your Rackspace account which has the rackspace cloud-server monitoring agent installed. 

TOKEN=mytokengoeshere
server_uuid_here=serveruuidgoeshere
customeridhere=customeridtenantnumberhere

 curl -s -H "Content-Type: application/json" -H "X-Auth-Token: $token" https://monitoring.api.rackspacecloud.com/v1.0/$customeridhere/agents/$server_uuid_here/host_info/processes

Not that difficult to do, really !