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I am working with a remote server which runs tmux. I want to be able to open a one-line pane with server memory report updated in realtime. Like top or htop. Is there such a command line utility? Is there a better alternative?

UPDATE

As the original formulation is somewhat ambigous, I'll explain some more. I have also added "CPU" in the title since that too would be nice, and such programs often have CPU indicators too.

  1. I know what programs are running on the server, so I do not need the list of processes. That is - if memory is taken, I know what is occupying it. Simply showing some readout on how much RAM is busy would be enough. If I'll need more info, I'll refer to htop.
  2. CPU load can also be displayed along the memory info. Again, it is a matter of about 5-6 characters per 1 core.
  3. If there's more info than can fit in the line, it could swap "pages" on display.
  4. The whole point is to have a tiny readout, akin to those that are rather common to reside in tray area on graphical desktops under Linux or Windows (in Windows, for example, there's a ton of programs that show that info in tray area, taking a couple of square centimeters of screen space).

All these are just wishes in the direction of what I'd like to have. Probably there's some program that can do this or something like this.

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    Could you give an example of what you want in the memory report? – Nathaniel M. Beaver Oct 8 '15 at 3:41
  • @bariumbitmap Hello! Thanks for your comment. I have updated the original question. – noncom Oct 8 '15 at 10:37
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    Thanks, that's helpful clarification. A few more questions: The free program shows total memory usage; are you interested in percentage occupied instead? Also, how long is the line allowed to be? For example, should it be 80 columns or less, or are arbitrarily long lines allowed? – Nathaniel M. Beaver Oct 8 '15 at 15:44
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    For example, would a variation on this script serve your needs? unix.stackexchange.com/questions/119126/… – Nathaniel M. Beaver Oct 8 '15 at 17:27
  • @bariumbitmap Wow, yes, quite probable! Did not think that that is possible with bash! This will work with some change in the formatting! I guess it can also be made to update, say 1-2 times a second in a loop so that it will run on itself in a dedicated terminal... – noncom Oct 9 '15 at 8:28
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1) Instead of tmux, try byobu, a terminal window manager which devotes the bottom two lines of each screen to a myriad of configurable system status notifications, for which there is a terminal GUI byobu-config.

2) liquidprompt, an adaptive prompt for bash & zsh with various configurable status display options.

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