NAME rainbarf - CPU/RAM/battery stats chart bar for tmux (and GNU screen) VERSION version 1.4 SYNOPSIS rainbarf --tmux --width 40 --no-battery DESCRIPTION Fancy resource usage charts to put into the tmux status line. The CPU utilization history chart is tinted with the following colors to reflect the system memory allocation: * green: free memory; * yellow: active memory; * blue: inactive memory; * red: wired memory on Mac OS X / FreeBSD; "unaccounted" memory on Linux; * cyan: cached memory on Linux, buf on FreeBSD. * magenta: used swap memory. If available, battery charge is displayed on the right. Just go to https://github.com/creaktive/rainbarf to see some screenshots. USAGE Installation * Traditional way: perl Build.PL ./Build test ./Build install * Homebrew way: brew install rainbarf * MacPorts way: port install rainbarf * CPAN way: cpan -i App::rainbarf * Modern Perl way: cpanm git://github.com/creaktive/rainbarf.git Configuration Add the following line to your ~/.tmux.conf file: set-option -g status-utf8 on set -g status-right '#(rainbarf)' Or, under GNOME Terminal: set-option -g status-utf8 on set -g status-right '#(rainbarf --rgb)' Reload the tmux config by running tmux source-file ~/.tmux.conf. CONFIGURATION FILE ~/.rainbarf.conf can be used to persistently store "OPTIONS": # example configuration file width=20 # widget width bolt # fancy charging character remaining # display remaining battery rgb # 256-colored palette "OPTIONS" specified via command line override that values. Configuration file can be specified via RAINBARF environment variable: RAINBARF=~/.rainbarf.conf rainbarf OPTIONS --help This. --[no]battery Display the battery charge indicator. Enabled by default. --[no]remaining Display the time remaining until the battery is fully charged/empty. See "CAVEAT". Disabled by default. --[no]bolt Display even fancier battery indicator. Disabled by default. --[no]bright Tricky one. Disabled by default. See "CAVEAT". --[no]rgb Use the RGB palette instead of the system colors. Also disabled by default, for the same reasons as above. --fg COLOR_NAME Force chart foreground color. --bg COLOR_NAME Force chart background color. --[no]loadavg Use load average metric instead of CPU utilization. You might want to set the --max threshold since this is an absolute value and has varying ranges on different systems. Disabled by default. --[no]swap Display the swap usage. Used swap amount is added to the total amount, but the free swap amount is not! Disabled by default. --max NUMBER Maximum loadavg you expect before rescaling the chart. Default is 1. --order INDEXES Specify the memory usage bar order. The default is fwaic ( free, wired, active, inactive & cached ). --[no]tmux Force tmux colors mode. By default, rainbarf detects automatically if it is being called from tmux or from the interactive shell. --screen screen(1) colors mode. Experimental. See "CAVEAT". --width NUMBER Chart width. Default is 38, so both the chart and the battery indicator fit the tmux status line. Higher values may require disabling the battery indicator or raising the status-right-length value in ~/.tmux.conf. --datfile FILENAME Specify the file to log CPU stats to. Default: $HOME/.rainbarf.dat --skip NUMBER Do not write CPU stats if file already exists and is newer than this many seconds. Useful if you refresh tmux status quite frequently. CAVEAT Time remaining If the --remaining option is present but you do not see the time in your status bar, you may need to increase the value of status-right-length to 48. Color scheme If you only see the memory usage bars but no CPU utilization chart, that's because your terminal's color scheme need an explicit distinction between foreground and background colors. For instance, "red on red background" will be displayed as a red block on such terminals. Thus, you may need the ANSI bright attribute for greater contrast, or maybe consider switching to the 256-color palette. There are some issues with that, though: 1. Other color schemes (notably, solarized ) have different meaning for the ANSI bright attribute. So using it will result in a quite psychedelic appearance. 256-color pallette, activated by the --rgb flag, is unaffected by that. 2. The older versions of Term::ANSIColor dependency do not recognize bright/RGB settings, falling back to the default behavior (plain 16 colors). However, the whole Term::ANSIColor is optional, it is only required to preview the effects of the "OPTIONS" via command line before actually editing the ~/.tmux.conf. That is, rainbarf --bright --tmux is guaranteed to work despite the outdated Term::ANSIColor! Another option is skipping the system colors altogether and use the RGB palette (rainbarf --rgb). This fixes the issue 1, but doesn't affect the issue 2. It still looks better, though. Persistent storage CPU utilization stats are persistently stored in the ~/.rainbarf.dat file. Every rainbarf execution will update and rotate that file. Since tmux calls rainbarf periodically (every 15 seconds, by default), the chart will display CPU utilization for the last ~9.5 minutes (15 * 38). Thus, several tmux instances running simultaneously for the same user will result in a faster chart scrolling. screen Stable screen version unfortunately has a broken UTF-8 handling specifically for the status bar. Thus, I have only tested the rainbarf with the variant from git://git.savannah.gnu.org/screen.git. My ~/.screenrc contents: backtick 1 15 15 rainbarf --bright --screen hardstatus string "%1`" hardstatus lastline REFERENCES * top(1) is used to get the CPU/RAM stats if no /proc filesystem is available. * ioreg(8) is used to get the battery status on Mac OS X. * ACPI is used to get the battery status on Linux. * Battery was a source of inspiration. * Spark was another source of inspiration. AUTHOR Stanislaw Pusep CONTRIBUTORS * Chris Knadler * cinaeco * Clemens Hammacher * H.Merijn Brand * Henrik Hodne * Joe Hassick * Josh Matthews * Lars Engels * Sergey Romanov * Tom Cammann * Tuomas Jormola COPYRIGHT AND LICENSE This software is copyright (c) 2016 by Stanislaw Pusep . This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.