But it starts at the top. In many ways, Linux and UNIX administration is today much easier than administration for popular commercial personal operating systems because it is much more transparent. It stands to affect the people of the world at least as profoundly as the Industrial Age. Multiprocessing is …

There are no set boundaries or any limitations. The visibility and easy access to the source code, which I mentioned earlier, can also be a double-edged sword as bad-intentioned people can find vulnerabilities and leave backdoors for future exploits. Processes begin life as executable object code, which is machine-runnable code …

It is time for the opening of the tools that will be needed to build this new age. The physical on-disk form of this mapping-for example, a simple table or a hash-is implemented and managed by the kernel code that supports a given filesystem. The reality is that not only …

Whereas pwd is just run by itself with no arguments, ls is a little more powerful. If this execution fails because the file is not in executable format, and the file is not a directory, it is assumed to be a shell script, a file containing shell commands. They are …

To make sure that even in a dual boot scenario office staff do not cling to their past desktop but acclimate quickly to the new desktop simply requires a "conversion plan." All of the employees know they will have a dual boot system that is fully functional for the first …

The job of cache coherency is done partially by the hardware and partially by the operating system. One side note is that the popularity of the macOS hardware and operating system as a platform for development that mainly targets Linux may be attributed to the BSD-like macOS operating system. There …

The first data written into the pipe is the first data read from the pipe. Like the rest of the kernel, device drivers use data structures to keep track of the device that it is controlling. These controllers are connected to the CPU and to each other by a variety …

As you can see, long hand command line options begin with two dashes ( -- ) and short hand options begin with a single dash ( - ). Use man command to display manual page of any desired command. There are several good reasons for becoming familiar with Linux. Where do you think Microsoft gets its …

Now Linux must check that any waiting, suspended, processes may now apply their semaphore operations. Much of enterprise IT's excitement is focused on advancements at the application level (and rightly so), but it's Linux that powers these innovations and helps to drive modern computing forward. If you're interested in writing …

The device identifier for the first partition of that disk (/dev/hdb1) is (3,65). Shell scripting is really what separates novice Linux consumers from advanced Linux users. This is why our previous shell script works even without us defining bash as an interpreter. The inode contains metadata associated with …