Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

should be allowed or denied. The program then writes a text file in /etc/apparmor.d, using the name of t ...

should at least avoid premature aging. Here are some suggestions to get you started: Do not just pull out ...

types of files that bad guys leave behind for their return. Finally, keep your disaster recovery ...

CHAPTER 21 Performance Tuning IN THIS CHAPTER Storage Disk Kernel Apache MySQL References Squeezing extra performan ...

Many Linux users love to tinker under the hood to increase the performance of their computers, and Linu ...

there is a problem, the data can be rebuilt from the journal. There are other file system options availab ...

error message saying that you should use this. Look in dmesg for it; if you do not see it, you don’t need t ...

The extra parameter tells hdparm to write the settings to disk so that they will be used each tim ...

until the buffer is full, until the kernel tells it to, or if you tell it to by using the sync command. ...

-c—Checks for bad blocks and then marks them as bad -f—Forces checking on a clean file system -v—Enters ...

does this through the /proc file system, which is a “virtual window” into the running kernel. Although ...

Both GNOME and KDE are “heavyweight” desktop systems: They are all- inclusive, all-singing, and all-dancing env ...

Whatever you do, when you are disabling modules, you should ensure that you leave either mod_deflate or mod_gzi ...

The key is understanding the buffers. There are buffers and caches for all sorts of things, and finding out how full ...

current key buffer is being used. Use the SHOW VARIABLES command and look up the value of the key_buffer_size ...

double the size again, restart, and retest. You should keep repeating this until your key buffer usage is ...

+-------------------------+--------+ 8 rows in set (0.00 sec) From this, you can see that only 18 queries ar ...

will add some more speed. When reading from tables, MySQL has to open the file that stores the table ...

indexes. References http://www.coker.com.au/bonnie++/—The home page of Bonnie++, a disk benchmarking tool, whi ...

CHAPTER 22 Kernel and Module Management IN THIS CHAPTER The Linux Kernel Managing Modules When to Recompile K ...