HOW TO : Use grep and awk to find count of unique entries
I have use grep extensively before to analyze data in log files before. A good example is this post about using grep and sort to find...
Linux
HOW TO : Configure tcpdump to rotate capture files based on size
quick note for self. If you are capturing traffic using tcpdump, you can rotate the capture files based on size [code]sudo tcpdump -i INTERFACE_TO_CAPTURE_TRAFFIC_ON -C 10...
HOW TO : Use curl to check the impact of DNS changes
Ran into an interesting scenario at work today. We had to check the impact of a DNS change on a certain hostname. Normally, you would edit...
HOW TO : Compare two directories in Linux
Quick post on using diff to compare two directories in Linux. This will show the list of files and subdirectories that are different in either directories...
HOW TO : grep for response codes in apache logs
If you want to grep for certain http response codes in a apache log file Look for all access requests with a 200 response code[code] grep...
HOW TO : Find files, search for content in them, replace the content
The title pretty much says it all :). Here is a quick one liner, using multiple tools, to look for files in a directory, search for...