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# Unix Philosophy
Unix philosophy is one of the most important and essential approaches to [programming](programming.md) (and by extension all [technology](tech.md) design) which advocates great [minimalism](minimalism.md) and is best known by the saying that **a program should only do one thing and do it well**. Unix philosophy is a collective [wisdom](wisdom.md), a set of design recommendations evolved during the development of one of the earliest (and most historically important) [operating systems](os.md) called [Unix](unix.md), hence the name. Having been defined by [hackers](hacking.md) (the true, old style ones) the philosophy naturally advises for providing a set of many highly effective tools that can be combined in various ways, i.e. to perform [hacking](hacking.md), rather than being restricted by a fixed, intended functionality of huge do-it-all programs. Unix philosophy advocates [simplicity](kiss.md), clarity, modularity, reusability and composition of larger programs out of very small programs rather than designing huge monolithic programs as a whole. Unix philosophy, at least partially, lives on in many project and Unix-like operating systems such as [Linux](linux.md) (though Linux is more and more distancing from Unix), has been wholly adopted by groups such as [suckless](suckless.md) and [LRS](lrs.md) (us), and is even being reiterated in such projects as [plan9](plan9.md).
Unix philosophy is one of the most important and essential approaches to [programming](programming.md) (and by extension all [technology](tech.md) design) which advocates great [minimalism](minimalism.md) and is best known by the saying that **a program should only do one thing and do it well**. Unix philosophy is a collective [wisdom](wisdom.md), a set of design recommendations evolved during the development of one of the earliest (and most historically important) [operating systems](os.md) called [Unix](unix.md), hence the name. Having been defined by [hackers](hacking.md) (the true, old style ones) the philosophy naturally advises for providing a set of many highly effective tools that can be combined in various ways, i.e. to perform [hacking](hacking.md), rather than being restricted by a fixed, intended functionality of huge do-it-all programs. Unix philosophy advocates [simplicity](kiss.md), clarity, modularity, reusability and composition of larger programs out of very small programs rather than designing huge monolithic programs as a whole. Unix philosophy, at least partially, lives on in many project and Unix-like operating systems such as [GNU](gnu.md)/[Linux](linux.md) (though GNU/Linux distros are more and more distancing from Unix), has been wholly adopted by groups such as [suckless](suckless.md) and [LRS](lrs.md) (us), and is even being reiterated in such projects as [plan9](plan9.md).
NOTE: see also *[everything is a file](everything_is_a_file.md)*, another famous design principle of Unix -- this one is rather seen as a Unix-specific design choice rather than part of the general Unix philosophy itself, but it helps paint the whole picture.