Refactor zsh aliases

config/zsh/aliases.zsh

@@ -5,14 +5,13 @@ alias mv='mv -i'
 
 alias mkdir='mkdir -p'
 alias wget='wget -c'
+alias rg='noglob rg'
+alias bc='bc -lq'
 
 alias grep='grep --color=auto'
 alias fgrep='fgrep --color=auto'
 alias egrep='egrep --color=auto'
 
-alias rg='noglob rg'
-alias ag='noglob ag -p $HOME/.config/ag/agignore'
-
 
 ### convenience
 alias ..='cd ..'
@@ -24,12 +23,17 @@ alias q=exit
 alias clr=clear
 alias sudo='sudo '
 
+if command -v exa >/dev/null; then
   alias exa='exa --group-directories-first'
   alias l='exa -1'
   alias ll='exa -l'
   alias la='LC_COLLATE=C exa -la'
-alias mk=make
+else
+  alias l='ls -1'
+  alias ll='ls -l'
+fi
 
+alias mk=make
 alias rcp='rsync -vaP --delete'
 alias rmirror='rsync -rtvu --delete'
 alias gurl='curl --compressed'