Source: Microsoft Azure vs AWS: Cloud Comparison Guide [2018 Update]

Source: Memcrashed - Major amplification attacks from UDP port 11211

Attackers abuse “memcached” to amplify volumes by an unprecedented factor of 51k.Source: In-the-wild DDoSes use new way to achieve unthinkable sizes

Howdy! When running a script using nohup and piping the output to a logfile, I received this message: nohup: ignoring input and appending output to `nohup.out' This is simply a…

Howdy ma Peeps! Long time no post! I recently ran into an issue with a client trying to update OpenJDK to 1.8.0 (using the "yum install java-1.8.0") to his cPanel…

Redis is an open-source, networked, in-memory, key-value data store with optional durability. It is written in ANSI C. It’s a “NoSQL” key-value data store. More precisely, it is a data…

Howdy!

I won’t be going into a whole lot of detail about sar as this has been documented elsewhere multiple times but basically, SAR stands for System Activity Report and as its name suggests, the sar command is used to collect,report & save CPU, Memory, I/O usage in Unix like operating systems. The SAR command produces reports on the fly and can also save the reports in the log files as well. The sar man page states:

The sar command writes to standard output the contents of selected cumulative activity counters in the operating system. The accounting system, based on the values in the count and interval parameters, writes information the specified number of times spaced at the specified intervals in seconds. If the interval parameter is set to zero, the sar command displays the average statistics for the time since the system was started. If the interval parameter is specified without the count parameter, then reports
are generated continuously.

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