From a command shell, use the “concatenate” command: cat /proc/meminfo for memory usage information. You should see a line starting something like: Mem: 64655360, etc. This is the total memory Linux thinks it has available to use.
What, if anything, is wrong with each of the following commands? a) ls -l-s b) cat file1, file2 c) ls – s Factdir
Answers: a) there should be space between the 2 options: ls -l -s b) do not use commas to separate arguments: cat file1 file2 c) there should be no space between hyphen and option label: ls –s Factdir
Daemons are services that provide several functions that may not be available under the base operating system. Its main task is to listen for service request and at the same time to act on these requests. After the service is done, it is then disconnected and waits for further requests.
Just like any other typical operating system, Linux has all of these components: kernel, shells and GUIs, system utilities, and application program. What makes Linux advantageous over other operating system is that every aspect comes with additional features and all codes for these are downloadable for free.