From: Jesus de Mula Cano <demula@gmail.com>
Date: Sun, 6 Mar 2011 23:02:43 +0000 (+0100)
Subject: Add command_exists function to base.plugin from http://stackoverflow.com/questions... 
X-Git-Url: https://source.supwisdom.com/gerrit/gitweb?a=commitdiff_plain;h=229aa833a2965581f549fceddc78e28317c53e63;p=common%2Fbash_it.git

Add command_exists function to base.plugin from stackoverflow.com/questions/592620/check-if-a-program-exists-from-a-bash-script:
---

diff --git a/plugins/base.plugin.bash b/plugins/base.plugin.bash
index 7f4ba2f..3a73b30 100644
--- a/plugins/base.plugin.bash
+++ b/plugins/base.plugin.bash
@@ -11,19 +11,11 @@ function myip {
   echo "Your public IP is: ${bold_green} $res ${normal}"
 }
 
-# Make a directory and immediately 'cd' into it
-
 function mkcd(){
 	mkdir -p "$*"
 	cd "$*"
 }
 
-# Search through directory contents with grep
-
-function lsgrep(){
-  ls | grep "$*"
-}
-
 # View man documentation in Preview
 pman () {
    man -t "${1}" | open -f -a $PREVIEW
@@ -77,6 +69,11 @@ function t() {
 	 fi
 }
 
+# Checks for existence of a command
+command_exists () {
+    type "$1" &> /dev/null ;
+}
+
 # List all plugins and functions defined by bash-it
 function plugins-help() {