In a basic environment with a Cisco ASA firewall I am logging everything to a syslog-ng server. As there aren’t any reporting tools installed, I am using grep to filter the huge amount of syslog messages in order to get the information I want to know. In this blog post I list a few greps for getting the interesting data.
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A few days ago I needed to use vi for a simple change in a single file. However, I am not using vi in normal situations since I prefer the usage of “nano“. Since I only needed to edit a few lines, all the command references I found on the Internet were much to overwhelmed, so I decided to write a really tiny vi tutorial which only shows the commands in order to edit a file and to close it afterwards. Here we go:
Open the file with
Go into the edit mode with “i” and edit the text. When you are finished, hit the Esc key to leave the edit mode. Type a colon followed by an “x” (appears at the bottom line) to quit vi with saving the changes. Thats it. Here is the sequence at a glance:
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