homes/programs/bash.nix

   1 { pkgs, lib, config, ... }:
   2 {
   3 programs.bash = {
   4   shellAliases = {
   5     cl = "clear";
   6     eic = "edit-in-commit";
   7     eigg = "edit-in-git-grep";
   8     g = "git";
   9     grep = "grep --color";
  10     j="sudo journalctl -u";
  11     jb="sudo journalctl -b";
  12     l = "ls -alh";
  13     ll = "ls -al";
  14     ls = "ls --color=tty";
  15     md-toc = "grep '^#\\+' --color";
  16     mem = "ps -e -orss=,user=,args= | sort -b -k1,1n";
  17     mem-top = "smem --sort rss --autosize";
  18     mpl = "mplayer";
  19     nixos-clean="sudo nix-collect-garbage -d";
  20     nixos-history="sudo nix-env --list-generations --profile /nix/var/nix/profiles/system";
  21     nixos-rollback="sudo nixos-rebuild switch --rollback";
  22     rsync = "rsync --no-inc-recursive --info=progress2 --inplace --partial";
  23     s="sudo systemctl";
  24     st="sudo systemctl status";
  25     u="systemctl --user";
  26     ut="systemctl --user status";
  27     watch = "watch --color";
  28     zfs-umount = "zfs-unmount";
  29   };
  30   initExtra = ''
  31     shopt -s globstar
  32     # Disable ctrl-s/ctrl-q flow control
  33     stty -ixon
  34
  35     mkcd () {
  36       mkdir -p "$1" &&
  37       cd "$1"
  38     }
  39     smartctl-tbw () {
  40       device=''${1:-/dev/sda}
  41       sudo smartctl -A $device |
  42       { awk '
  43         $0 ~ /Power_On_Hours/ { poh=$10; printf "%s / %d hours / %d days / %.2f years\n",  $2, $10, $10 / 24, $10 / 24 / 365.25 }
  44         $0 ~ /Total_LBAs_Written/ {
  45             lbas = $10;
  46             bytes = $10 * 512;
  47             mb = bytes / 1024^2;
  48             gb = bytes / 1024^3;
  49             tb = bytes / 1024^4;
  50             printf "%s / %s  / %d mb / %.1f gb / %.3f tb\n", $2, $10, mb, gb, tb
  51             printf "mean writes per hour:  / %.2f",  mb/poh
  52         }
  53         $0 ~ /Airflow_Temperature_Cel/ { print $2 " / " $10}
  54         $0 ~ /Wear_Leveling_Count/ { printf "%s / %d (%% health)\n", $2, int($4) }
  55       '; echo; } |
  56       sed -e 's:/:@:' |
  57       sed -e "s\$^\$$device @ \$" |
  58       column -ts@
  59     }
  60     swaplist () {
  61       lastpid=
  62       swap=0
  63       sudo grep -H '^Swap:' /proc/*/smaps 2>/dev/null |
  64       while IFS=: read -r file x size x
  65       do
  66         pid=''${file#/proc/}
  67         pid=''${pid%/smaps}
  68         size=''${size% kB}
  69         size=''${size##* }
  70         if test "$pid" = "$lastpid"
  71         then swap=$(( swap + size ))
  72         else
  73           if test "$swap" -gt 0
  74           then printf "%u pid=%u cmd=%s\n" "$swap" "$lastpid" "$(tr '\000' ' ' </proc/"$lastpid"/cmdline)"
  75           fi
  76           if test "$pid" = self
  77           then break
  78           else
  79             lastpid=$pid
  80             swap=$size
  81           fi
  82         fi
  83       done |
  84       sort -nk1,1
  85     }
  86     edit-in-commit () { $EDITOR $(git diff-tree --no-commit-id --name-only -r "$@"); }
  87     edit-in-git-grep () { $EDITOR $(git grep --name-only --recursive "$@"); }
  88     zfs-mount () { for d in $(zfs list -rH -o name "$@"); do sudo zfs mount -l "$d"; done; }
  89     zfs-unmount () { sudo zfs unmount -u "$@"; }
  90   '';
  91   profileExtra = ''
  92   '';
  93 };
  94 programs.direnv.enableBashIntegration = true;
  95 programs.broot.enableBashIntegration = true;
  96 home.sessionVariables = {
  97   PS1 = ''\[\033[1;32m\]\[\e]0;\u@\h: \w\a\]\W\[\033[0m\] \$(e=\$?; if [ \$e != 0 ]; then echo '\[\e[0;91m\]'\$e'\[\e[0m\]'; fi)\$ '';
  98 };
  99 programs.readline = {
 100   enable = lib.mkDefault config.programs.bash.enable;
 101   includeSystemConfig = true;
 102   bindings = {
 103     "\\eOF"    = "end-of-line";
 104     "\\eOH"    = "beginning-of-line";
 105     "\\e[1;5C" = "forward-word";
 106     "\\e[1;5D" = "backward-word";
 107     "\\e[1~"   = "beginning-of-line";
 108     "\\e[4~"   = "end-of-line";
 109     "\\e[5C"   = "forward-word";
 110     "\\e[5D"   = "backward-word";
 111     "\\e[7~"   = "beginning-of-line";
 112     "\\e[8~"   = "end-of-line";
 113     "\\e[A"    = "history-search-backward";
 114     "\\e[B"    = "history-search-forward";
 115     "\\e[F"    = "end-of-line";
 116     "\\e[H"    = "beginning-of-line";
 117     "\\e\\e[C" = "forward-word";
 118     "\\e\\e[D" = "backward-word";
 119   };
 120   variables = {
 121     colored-completion-prefix = lib.mkDefault true;
 122     colored-stats = lib.mkDefault true; # Note that this may cause completion text blink in some terminals (e.g. xterm).
 123     echo-control-characters = lib.mkDefault true;
 124     mark-symlinked-directories = lib.mkDefault true;
 125     menu-complete-display-prefix = lib.mkDefault true;
 126     show-all-if-ambiguous = lib.mkDefault true;
 127     show-all-if-unmodified = lib.mkDefault true;
 128     visible-stats = lib.mkDefault false; # Append char to indicate type
 129   };
 130 };
 131 }