zsh: possible new feature: remove invalid aliases

.zshrc

@@ -49,7 +49,9 @@
 {
    ## Short hand programs (ex: sc = shellcheck) >>>
    # use nvim rather than vim if the command exists
-   [ -x "$(command -v nvim)" ] && alias vim='nvim' vimdiff='nvim -d'
+   alias \
+      vim='nvim' \
+      vimdiff='nvim -d'
 
    alias \
       vv="$EDITOR" \
@@ -60,8 +62,8 @@
    alias :q='exit' \
          q='exit' \
 
-   alias vim=nvim
    alias sc=shellcheck
+
    # rmdir is long
    alias \
       rmd='rmdir' \
@@ -106,7 +108,7 @@
    alias sdn='shutdown now'
 
    # open a new session called 0, but if there is already a session called 0, connect to it
-   alias tm='tmux new -As0' 
+   alias tm='tmux new -As0'
 
    # List available X displays. Useful for finding what display to export when connected over ssh.
    alias lsx='ls /tmp/.X11-unix | tr "X" ":"'
@@ -136,7 +138,7 @@
    alias cpv="rsync -ah --info=progress2"
 
    # lists all open ports, along with some other info
-   alias ls-ports='netstat -tulpn' 
+   alias ls-ports='netstat -tulpn'
 
    # list all disks and their mount points
    alias mnt="mount | awk -F' ' '{ printf \"%s\t%s\n\",\$1,\$3; }' | column -t | grep -E '^/dev/' | sort"
@@ -164,6 +166,22 @@
    # <<<
    # optionally source an external alias file
    [ -f "${XDG_CONFIG_HOME:-$HOME/.config}/shell/aliasrc" ] && source "${XDG_CONFIG_HOME:-$HOME/.config}/shell/aliasrc"
+
+   # # TODO: remove all aliases that refrence programs which do not exist >>>
+   # validate_alias() {
+   #    # check if the alias points to an alias
+   #    if alias "$(alias lsd | grep -Po "(?<=').*(?=')")"; then
+   #       :
+   #    else
+   #       # see if the thing the alias points to is an executable
+   #       test -x "$(command -V "$1" | grep -Po "(?<=$1 is )/.*$")"
+   #    fi
+   # }
+   # for ALIAS in $(alias | cut -d = -f 1);do
+   #    validate_alias "$ALIAS" &&
+   #       unalias "$ALIAS" &&
+   #       echo "alias $ALIAS was removed"
+   # done # <<<
 }
 # <<<
 ### Functions >>>
@@ -179,7 +197,7 @@
       fi
    }
 
-   # cd file: cd to the containing dir of a file, given part of its name
+   # cd file: cd to the containing dir of a file or folder, given part of its name
    # can take an `fd` command
    # requires that `fzy` is installed
    cdf() {
@@ -275,12 +293,28 @@
       echo "$FILEPATH" | grep -o 'site.*' | sed 's+^site+https://blakenorth.net+g'
    }
 
+   # Opens a subshell in each of the directories below the one you're in, so
+   # you can execute commands in them
+   # If I use this enough, I may make something that can do more
+   # Ideas for what it could do in the future:
+   # - somehow record typed commands so they can be automatically repeated
+   #     - maybe get the length of the histfile before and after, executing the
+   #     last X number of commands
+   # - Maybe just add an argument that takes a command and executes it in all dirs
+   # (although that wouldn't be as good as recording actions bc it's easy to do
+   # that by just writing a for loop)
+   foreachdir() {
+      for DIR in *; do
+         (cd "$DIR" && zsh)
+      done
+   }
+
    # for sending error messages from functions and whatnot
    error() {
       ERROR_CODE="$?"
       >&2 echo "An error occurred within a function in the .zshrc on line number ${1}"
       return $ERROR_CODE
-   } 
+   }
 
    # prcolors(): Display all colors in a few different ways >>>
    # TODO: change this to make it not just a few scripts smashed together
@@ -301,7 +335,7 @@
          for bgc in {40..47}; do
             fgc=${fgc#37} # white
             bgc=${bgc#40} # black
-            
+
             vals="${fgc:+$fgc;}${bgc}"
             vals=${vals%%;}
 
@@ -316,14 +350,14 @@
    elif [ $1 -eq '2' ];then
       # from base16shell >>>
       ansi_mappings=(
-         Red               Green        
+         Red               Green
          Yellow            Blue
          Magenta           Cyan
          White             Black
-         Bright_Red        Bright_Green 
+         Bright_Red        Bright_Green
          Bright_Yellow     Bright_Blue
          Bright_Magenta    Bright_Cyan
-         Bright_White      Bright_Black 
+         Bright_White      Bright_Black
       )
       colors=(
          base00 base08
@@ -345,7 +379,7 @@
          non_padded_value=$((10#$padded_value))
          base16_color_name=${colors[$non_padded_value]}
          current_color_label=${current_color:-unknown}
-         ansi_label=${ansi_mappings[$non_padded_value]} 
+         ansi_label=${ansi_mappings[$non_padded_value]}
          block=$(printf "\x1b[48;5;${non_padded_value}m___________________________")
          foreground=$(printf "\x1b[38;5;${non_padded_value}m$color_variable")
          printf "%s %s %s %-30s %s\x1b[0m\n" $foreground $base16_color_name $current_color_label ${ansi_label:-""} $block
@@ -377,7 +411,7 @@
       mkdir -p "$1" || error $LINENO
       cd "$1" || error $LINENO
    }
-   
+
    # shellcheck disable=SC2086
    random-mac() {
       interfaces=(enp5s0 wlp4s0)
@@ -483,7 +517,7 @@
       ## Themes
       # terminal colors
       if [[ -f ~/.config/shell/colors.sh ]];then
-         source ~/.config/shell/colors.sh 
+         source ~/.config/shell/colors.sh
       else
          zinit snippet 'https://github.com/chriskempson/base16-shell/blob/master/scripts/base16-onedark.sh' # onedark shell colors
       fi
@@ -499,7 +533,7 @@
    # <<<
 }
 # <<<
-### General ZSH configuration >>> 
+### General ZSH configuration >>>
 # This section is (mostly) From manjaro's "manjaro-zsh-config" (/usr/share/zsh/manjaro-zsh-config)
 
 [ -z "$HISTFILE" ] && HISTFILE="$HOME/.zsh_history"
@@ -662,7 +696,7 @@ function mzc_termsupport_preexec {
   # split command into array of arguments
   local -a cmdargs
   cmdargs=("${(z)2}") # " <- syntax highlighting fix
-  
+
   # if running fg, extract the command from the job description
   if [[ "${cmdargs[1]}" = fg ]]; then
      # get the job id from the first argument passed to the fg command