pkgs/tools/system/smartmontools/smartctl-tbw/default.nix

   1 { coreutils
   2 , gawk
   3 , gnused
   4 , smartmontools
   5 , stdenv
   6 , sudo
   7 , writeShellScriptBin
   8 , utillinux
   9 }:
  10 let PATH = stdenv.lib.concatStringsSep ":"
  11   [ "${coreutils}/bin"
  12     "${gawk}/bin"
  13     "${gnused}/bin"
  14     "${sudo}/bin"
  15     "${utillinux}/bin"
  16   ];
  17 in
  18 writeShellScriptBin "smartctl-tbw" ''
  19   export PATH=${PATH}
  20   device=''${1:-/dev/sda}
  21   sudo ${smartmontools}/bin/smartctl -A $device |
  22   { awk '
  23     $0 ~ /Power_On_Hours/ { poh=$10; printf "%s / %d hours / %d days / %.2f years\n",  $2, $10, $10 / 24, $10 / 24 / 365.25 }
  24     $0 ~ /Total_LBAs_Written/ {
  25         lbas = $10;
  26         bytes = $10 * 512;
  27         mb = bytes / 1024^2;
  28         gb = bytes / 1024^3;
  29         tb = bytes / 1024^4;
  30         printf "%s / %s  / %d mb / %.1f gb / %.3f tb\n", $2, $10, mb, gb, tb
  31         printf "mean writes per hour:  / %.2f",  mb/poh
  32     }
  33     $0 ~ /Airflow_Temperature_Cel/ { print $2 " / " $10}
  34     $0 ~ /Wear_Leveling_Count/ { printf "%s / %d (%% health)\n", $2, int($4) }
  35   '; echo; } |
  36   sed -e 's:/:@:' |
  37   sed -e "s\$^\$$device @ \$" |
  38   column -ts@
  39 ''