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RAM

Debian Memory Requirements

Each Debian release and architecture has its own (minimum) RAM requirements, which mainly depends of the type of installation (Graphical Desktop...).

This requirement is given in the "Debian Installation guides" https://www.debian.org/releases/ (stable/amd64).

Available Memory

GNOME users can use the About section in the Settings to know the installed RAM.

free is the Unix standard command to display the amount of free and used memory in the system. For example: 

$ free
             total       used       free     shared    buffers     cached
Mem:       2067696     679244    1388452          0     111500     123236
-/+ buffers/cache:     444508    1623188
Swap:       998572     368976     629596

Testing Memory

See also

CategorySystemAdministration | ?CategoryMemory