To find a text string within files in all sub-directories: find . -type f | xargs -r0 grep -F 'dodgystring' or find . -type f -exec grep -l "dodgystring" {} \; To replace a string within files in all sub-directories: find ./ -type f -exec sed -i... » More
My Virtual Machine was named http1 so I cloned the vdi as http2.vdi using the VBoxManage command:VBoxManage clonevdi http1.vdi ../pathtonewlocation/http2.vdiThe output was:0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%Clone hard disk... » More
I thought I would jot down a few notes about today's adventures with SNMP. Specifically using SNMP with Nagios mostly on Red Hat/CentOS. I have an appliance from a third-party from which I would like to monitor and graph performance. So view this as a... » More
In Linux to find files not owned by user using the 'find' command we negate with the exclamation mark so rather than:find . -user jonnywe use:find . ! -user jonnyWhere:find <dir> ! -user <username>
On a shared server with MySQL and Apache the MySQL server was periodically disallowing connections as there were already too many connections. The default is 150+1 so I added the following to /etc/my.cnfmax_connections=200To increase the maximum number... » More
Running Clam on a separate machine to our Mail Transfer Agent we needed to configure iptables to allow access to clam from those machines. Clamd listens for connections on port 3310 by default but appears to hand off to other 'passive' ports for each... » More
