Inotifywait provides two options that are very interesting for folder synchronization or real-time backups. One powerful characteristic of inotifywait is to check for changes continuously as soon new events occur, inotifywait prints the modifications and exits. This command was specially designed to be used in shell scripts. Inotifywait uses inotify API to wait for changes in files. GRSYNC WINDOWS SCHEDULING HOW TOHow to use inotifywait for autobacks and syncronizations? In essence, only inotify-tools, Rsync, and a while loop are required to complete this mission. In general, this solution will be light, inexpensive and, why not say, safer. However, this article shows you a more elegant way to accomplish the same using only inotifywait and rsync in a Bash script. The number of applications that can be used to accomplish this simple task is vast, and some of these are third-party solutions. There is a large list of different methods to synchronize folders and files. What do you need to perform syncronization or autobackups? A bash script can perfectly suit this task. On the other hand, Bash scripts are very good for single tasks like the intention of this article: to combine utilities with capabilities to check for changes in a specific folder and then synchronize its files. However, when the script needs to deal with multiple conditions or accumulate too many purposes, it is time to consider a more robust programming language, like C or other script languages, where Python and Perl are good examples. In this matter, one question always arises: if Bash is so powerful, why not use it to automate all the boring stuff? Bash syntax is simple and pragmatic: it gives you the ability to combine programs to automate common tasks. GRSYNC WINDOWS SCHEDULING SOFTWAREOthers claim that this kind of approach can be 235 x faster than a Hadoop cluster – which is not so difficult to believe considering some clustering monstrosities you can find nowadays just to suit bad software designs. It is not difficult to find people doing advanced data analysis using only bash script and GNU built-in utilities. This command-line tools and built-in utilities are powerful and can interact directly with the operating system without compilation or additional interpreters usually core utilities and command-line interfaces, like awk, xargs, find, and grep, can have a much better performance than using Python scripts and its libraries for example. The advantage of a bash script is that you can use command-line tools directly inside it without the need for import or source external libraries. The user can create commands just by combining commands in a text file these special types of text file that include a collection of commands is called shell scripts and, when those files receive permission to execute, the shell interpreter sees them as a single command. Technically speaking, the programming side of a shell gives the user abilities and features to combine system or shell utilities in a file. The same applies to MacOS and some other Unix-Like operating systems.īash is not only a command language as other Unix shells, Bash is both a programming language and a command interpreter. Virtually all GNU/Linux distribution comes with Bash as the default shell. Today you can find Bash almost everywhere, including Microsoft Windows with the new Windows Subsystem for Linux. Why should you use Bash Scripts to perform folder synchronizations and backups?īash is by far the most popular and used sh-compatible command language interpreter.
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