By Jason Cannon
Turn into a Linux Ninja with Command Line Kung Fu! Do you're thinking that you'll want to lock your self in a basement analyzing cryptic guy pages for months on result in order to have ninja like command line talents? in truth, if you happen to had anyone proportion their strongest command line information, methods, and styles you'd shop your self loads of time and frustration. What when you may well glance over the shoulder of a superb good friend that simply occurred to be a command line guru? What in the event that they not just confirmed you the instructions they have been utilizing, yet why they have been utilizing them and precisely how they labored? And what if that good friend took the time to write down it all down so that you can check with it everytime you beloved? good, a pal did simply that. Command Line Kung Fu is choked with dozens of suggestions and over a hundred functional real-world examples. You won't locate theoretical examples during this booklet. The examples display the way to resolve genuine difficulties and attain valuable pursuits. The strategies are effortless to discover, too. every one bankruptcy covers a particular subject and teams similar information and examples jointly. for instance, if you want support extracting textual content from a dossier glance within the "Text Processing and Manipulation" bankruptcy. additionally, a entire index is incorporated. with a purpose to locate each instance the place a given command is used -- whether it's now not the most topic of the top -- glance within the index. it's going to checklist each position within the ebook the place that command seems to be. here's just a few of what you are going to examine by way of interpreting Command Line Kung Fu easy methods to fast and simply repeat instructions on your shell historical past Shortcuts for grabbing particular phrases out of your shell heritage to take advantage of on your present command the right way to shop a duplicate of your command line consultation for later reference find out how to strip out clean strains and reviews from records tips to keep an eye on colorized textual content whilst makes use of pipes and pagers how you can remodel textual content: from altering case to substituting characters and extra the way to extract particular blocks of textual content from documents or streams of enter a short tip to mend universal typos tips to edit records over the community how one can evaluate the diversities among documents in your neighborhood machine and a distant one tips on how to create and use SSH tunnels how one can confirm what courses are listening on what ports the best way to kill the entire techniques for a given consumer with a unmarried command techniques for facing multi-hop SSH connections tips on how to disconnect from a server in a manner that may let you decide up the place you left off how you can automate software program installs that require person enter Shell scripting suggestions how one can immediately maintain repeating a command until eventually it succeeds how to delete a dossier that's being written to tips on how to surf the net from the command line... and extra importantly the best way to obtain something from the net and engage with HTTP APIs how you can confirm who and what's utilizing the main disk area the right way to safe your internet browser consultation whilst utilizing an open wifi hotspot tips to generate random passwords from the command line suggestions for simply growing backups guidance for dealing with tar data find out how to exchange a string in a number of documents instantaneously with only one command and masses more... What you research in Command Line Kung Fu applies to any Linux distribution together with Ubuntu, Debian, Linux Mint, RedHat, Fedora, OpenSUSE, Slackware, and extra. Scroll up, click on the "Buy Now With 1-Click" button to get your black belt in Linux Command Line Kung Fu.
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Additional resources for Command Line Kung Fu: Bash Scripting Tricks, Linux Shell Programming Tips, and Bash One-Liners
For all the user programs in all the operating systems mentioned so far, each has one stack, one program counter, and one set of CPU registers per process. So, each of these programs can do only one thing at a time. They are single threaded. What Is a Thread? Just as multitasking operating systems can do more than one thing concurrently by running more than a single process, a process can do the same by running more than a single thread. Each thread is a different stream of control that can execute its instructions independently, allowing a multithreaded process to perform numerous tasks concurrently.
5. The kernel places any requested data into the user-space structure that the programmer provided. 6. The kernel changes any process structure values affected. 7. The process returns to user mode, replacing the registers and stack pointer, and returns the appropriate value from the system call. 64 Threads Primer 3 User Space Stack Kernel Space Stack 1 5 6 7 3 2 4 Time Figure 3-5 The Operation of a System Call Of course, system calls don’t always succeed. , if you supply an incorrect argument), in which case they return a failure value and set errno.
For an answer, we turn to some real, live, shipping programs. Some of these are described in greater detail in the MT “Case Studies” (see Threads Newsgroup on page 321). Operating Systems OSs are large, complex, yet still highly efficient and robust programs. The various OSs have been in daily use by millions of users over the past couple of years and have endured the stress put on them by hundreds of thousands of programmers who are not known for their generosity towards operating system quirks.