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modules/motd: improve interactive MOTD

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This commit is contained in:
Max Headroom 2022-07-25 11:39:55 +02:00
parent 06fb64bd9d
commit ed79a89642
1 changed files with 10 additions and 3 deletions
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13
modules/motd/default.nix
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@ -1,7 +1,14 @@
{ config, inputs, pkgs, ... }:
{
users.motd = builtins.readFile ./motd.txt;
environment.interactiveShellInit = ''
environment.interactiveShellInit = let
exec = package: program: "${package}/bin/${program}";
util = exec pkgs.coreutils;
uptime = exec pkgs.procps "uptime";
grep = exec pkgs.gnugrep "grep";
countUsers = '' ${util "who"} -q | ${util "head"} -n1 | ${util "tr"} ' ' \\n | ${util "uniq"} | ${util "wc"} -l'';
countSessions = '' ${util "who"} -q | ${util "head"} -n1 | ${util "wc"} -w'';
in ''
(
# Reset colors
CO='\033[0m'
@ -34,8 +41,8 @@
echo " █"
echo -e " █ ''${BWHITE}OS Version....:''${CO} NixOS ''${CAB}${config.system.nixos.version}''${CO}"
echo -e " █ ''${BWHITE}Configuration.:''${CO} ''${CAB}${inputs.self.rev or "\${BRED}(✘)\${CO}\${BWHITE} Dirty"}''${CO}"
echo -e " █ ''${BWHITE}Uptime........:''${CO} ''${CAB}$(${pkgs.procps}/bin/uptime -p | cut -d ' ' -f2-)''${CO}"
echo -e " █ ''${BWHITE}SSH Logins....:''${CO} There are currently ''${CAB}$(${pkgs.coreutils}/bin/who | ${pkgs.coreutils}/bin/wc -l)''${CO} users logged in"
echo -e " █ ''${BWHITE}Uptime........:''${CO} $(${uptime} -p | ${util "cut"} -d ' ' -f2- | GREP_COLORS='mt=01;35' ${grep} --color=always '[0-9]*')"
echo -e " █ ''${BWHITE}SSH Logins....:''${CO} There are currently ''${CAB}$(${countUsers})''${CO} users logged in on ''${CAB}$(${countSessions})''${CO} sessions"
)
'';
}