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