From 3e64d543178e352c7d5e1bd6f902e27c6eb5af04 Mon Sep 17 00:00:00 2001
From: Fernando Schauenburg <dev@schauenburg.me>
Date: Sun, 4 Mar 2018 18:19:01 +0100
Subject: [PATCH] [bash] improve `ls` aliases

When the GNU version of `ls` is not installed (e.g. on a new Mac), the
previous alias causes problems because the --group-directories-first
option is not supported and makes `ls` fail. This commit fixes that by
checking which version is installed and creating the alias accordingly.
---
 bashrc | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/bashrc b/bashrc
index d23a1e3..6241494 100644
--- a/bashrc
+++ b/bashrc
@@ -24,13 +24,18 @@ do
 done
 
 # Useful aliases
+if ls --group-directories-first >/dev/null 2>&1
+then
+    ls_dir_group="--group-directories-first"    # GNU version
+else
+    ls_dir_group="" # BSD version, doesn't support directory grouping
+fi
+
 alias g="git"
-alias ls="ls -F --color=auto --group-directories-first"
+alias ls="ls -hF --color=auto ${ls_dir_group}"
 alias la="ls -a"
 alias ll="ls -l"
 alias lla="ls -la"
-alias llh="ls -lh"
-alias llha="ls -lha"
 alias grep="grep --color=auto";
 alias egrep="egrep --color=auto";
 alias fgrep="fgrep --color=auto";