HOW TO : Use grep to search for content at end of line
If you want to search for a pattern at the end of a line, you can use tail -f logfile | grep -v “0$” breaking down...
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HOW TO : Query varnishlogs for requests with 404 responses
varnishlog, one of the tools provided with varnish cache, uses VSL Query Expressions (https://www.varnish-cache.org/docs/trunk/reference/vsl-query.html) to provide some powerful insights into the requests and responses. Here is...
HOW TO : Enable wildcard domains in Squid
We were trying to modify some ACL (access control lists) in squid to allow traffic to certain websites. Instead of adding each individual hostnames in a...
HOW TO : pipe results between commands when using sudo
Let’s say you are running a command as sudo and need to pass the output to a different command using pipe, you would run sudo command1...
HOW TO : Capture network traffic on a Solaris server
If you don’t have tcpdump installed on your solaris server, you can use the “snoop” system command to capture network traffic. Here is the command line...
HOW TO : Get HDD performance stats in Linux
quick note for self hdparm -tT /dev/sdx sdx : actual device you want to test