From d15a49df3bc65de2a125a3dbb072f078982ee141 Mon Sep 17 00:00:00 2001
From: rlscott <rlscott@umich.edu>
Date: Wed, 24 Oct 2018 01:14:30 -0400
Subject: [PATCH] added printf.md and tested it

---
 _commands/basics/printf.md | 71 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 _commands/basics/printf.md

diff --git a/_commands/basics/printf.md b/_commands/basics/printf.md
new file mode 100644
index 000000000..0525128ac
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+++ b/_commands/basics/printf.md
@@ -0,0 +1,71 @@
+---
+---
+
+printf
+-------
+
+print formatted ouput.
+works like the c function of the same name.
+
+~~~ bash
+printf FORMAT ARGS
+
+example:
+printf "My name is \"%s\".\n The args can be nums %i." "Ryan" 2
+
+output:
+"My name is Ryan.
+The args can be nums 2."
+~~~
+
+<!--more-->
+
+### Useful Options / Examples
+
+Like most commands printf also has a --help option
+Some other interesting things to note:
+
+#### variable types
+
+%i = integer
+
+%d = decimal
+
+%o = octal
+
+%x = hex
+
+%u = unsigned int
+
+%c = character
+
+%s = string
+
+%f = float
+
+%e = scientific float (engineering)
+
+%p = pointer
+
+%% = percent sign
+
+#### modifiers
+
+You can modify the variables in different ways:
+number = amount of space to occupy
+\- = pad to the left
+.number = max amount of characters to use
+
+##### Examples
+
+"%8s" "hi"
+
+"      hi"
+
+"%-8s" "hi"
+
+"hi      "
+
+"%.4s" "hello everyone"
+
+"hell"