Refactored dot-zshrc config (#46)

Added in command checking to the dot-zshrc file to now check if things
are installed before attempting to set aliases or run programs. This
allows easier sharing of this file for other users or even other
devices.

Reviewed-on: #46

zsh/dot-zshrc

@@ -3,25 +3,36 @@
 ############### ALIASES ####################
 
 # Load bottom with the proper color scheme
-alias btm="btm --theme=gruvbox"
+if command -v btm &>/dev/null; then
+  alias btm="btm --theme=gruvbox"
+fi
 
 # Remap ls to use lsd
-alias ls="lsd"
+if command -v lsd &>/dev/null; then
-
+  alias ls="lsd"
-# Add alias for la to call lsd -lah
+  # Add alias for la to call lsd -lah
-alias la="lsd -lah"
+  alias la="lsd -lah"
+fi
 
 # Replace cat with bat
-alias cat="bat"
+if command -v bat &>/dev/null; then
+  alias cat="bat"
+fi
 
 # Alias cd to z for zoxide
-alias cd="z"
+if command -v zoxide &>/dev/null; then
+  alias cd="z"
+fi
 
 # Alias vim to nvim
-alias vim="nvim"
+if command -v nvim &>/dev/null; then
+  alias vim="nvim"
+fi
 
 # Alias for stow --dotfiles
-alias stow.="stow --dotfiles"
+if command -v stow &>/dev/null; then
+  alias stow.="stow --dotfiles"
+fi
 
 ############### END ALIASES ###############
 
@@ -31,7 +42,9 @@ alias stow.="stow --dotfiles"
 export PATH=$HOME/.local/bin:$PATH
 
 # Export my local-progs directory to find executables
-export PATH=$HOME/local-progs/:$PATH
+if [[ -d "$HOME/local-progs" ]]; then
+  export PATH=$HOME/local-progs/:$PATH
+fi
 
 # Pre-configure settings for zsh-vi-mode
 function zvm_config() {
@@ -43,17 +56,25 @@ function zvm_config() {
 
 # Add in our fzf integrations for zsh
 # Comment if you don't want the fzf integration
-source <(fzf --zsh)
+if command -v fzf &>/dev/null; then 
+  source <(fzf --zsh)
+fi
 
 # Enable vi mode for zsh
-source $HOME/local-progs/zsh-vi-mode/zsh-vi-mode.plugin.zsh
+if [[ -f "$HOME/local-progs/zsh-vi-mode/zsh-vi-mode.plugin.zsh" ]]; then
+  source $HOME/local-progs/zsh-vi-mode/zsh-vi-mode.plugin.zsh
+fi
 
 # We want to make sure that autocompletions are loaded
 autoload -Uz compinit && compinit
 
 # Initialize zoxide
-eval "$(zoxide init zsh)"
+if command -v zoxide &>/dev/null; then
+  eval "$(zoxide init zsh)"
+fi
 
 # Finally we want to use starship for our prompt
 # (because rust that's why)
-eval "$(starship init zsh)"
+if command -v starship &>/dev/null; then
+  eval "$(starship init zsh)"
+fi