From 60dadfc9b936c684bbe46346768b771a3f1dc62f Mon Sep 17 00:00:00 2001
From: Brandon Rodriguez <brodriguez8774@gmail.com>
Date: Wed, 7 Oct 2020 08:03:06 -0400
Subject: [PATCH] Start of check_user functions
---
documents/references.md | 12 +++++++-
utils.sh | 67 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 78 insertions(+), 1 deletion(-)
mode change 100644 => 100755 utils.sh
diff --git a/documents/references.md b/documents/references.md
index c69740a..7e73648 100644
--- a/documents/references.md
+++ b/documents/references.md
@@ -27,4 +27,14 @@ Various references used in project.
## References
-None so far.
+### Including other Script Files
+<https://stackoverflow.com/a/10823650>
+
+### Check Number of Passed Args
+<https://stackoverflow.com/a/6482403>
+
+### Get User's name
+<https://stackoverflow.com/a/19306837>
+
+### String Manipulation
+<https://stackoverflow.com/a/14703709>
diff --git a/utils.sh b/utils.sh
old mode 100644
new mode 100755
index f1f641a..cf3cb1b
--- a/utils.sh
+++ b/utils.sh
@@ -1 +1,68 @@
#!/usr/bin/env bash
+###
+ # A helper/utility script to be imported by other scripts.
+ #
+ # Intended to hold very common functionality (that's surprisingly not built into bash) such as string upper/lower,
+ # and checking current user value, and prompts of yes/no user input.
+ ##
+
+
+###
+ # Function to check if current username matches passed value.
+ # In particular, is used to check if user is sudo/root user.
+ ##
+function check_is_user () {
+
+ # Check number of passed function args. Continue.
+ if [[ $# == 1 ]]
+ then
+
+ local username=$USER
+ local check_user=$1
+
+ echo "user is ${username}."
+ echo "check_user is ${check_user}"
+
+ # Handle for too many args.
+ elif [[ $# > 1 ]]
+ then
+ echo "Too many args passed. Expected one arg of username to check against."
+ exit 1
+
+ # Handle for too few args.
+ else
+ echo "Too few args passed. Expected one arg of username to check against."
+ exit 1
+ fi
+}
+
+
+###
+ # Function to check if current username does not match passed value.
+ # In particular, is used to check if user is sudo/root user.
+ ##
+function check_is_not_user () {
+
+ # Check number of passed function args.
+ if [[ $# == 1 ]]
+ then
+
+ # Got the expected number of function args. Continue.
+ local username=$USER
+ local check_user=$1
+
+ echo "user is ${username}."
+ echo "check_user is ${check_user}"
+
+ # Handle for too many args.
+ elif [[ $# > 1 ]]
+ then
+ echo "Too many args passed. Expected one arg of username to check against."
+ exit 1
+
+ # Handle for too few args.
+ else
+ echo "Too few args passed. Expected one arg of username to check against."
+ exit 1
+ fi
+}
--
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