From d34792d34d4e44466771e72dc56afa1b724c6eeb Mon Sep 17 00:00:00 2001
From: askiiart <dev@askiiart.net>
Date: Tue, 22 Aug 2023 22:12:01 -0500
Subject: [PATCH] Add minor files

---
 random-bash.md | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++
 test.bash      | 10 +++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 random-bash.md
 create mode 100755 test.bash

diff --git a/random-bash.md b/random-bash.md
new file mode 100644
index 0000000..ce4ea8a
--- /dev/null
+++ b/random-bash.md
@@ -0,0 +1,57 @@
+# Random bash
+
+Here's random useful bash stuff:
+
+## Check if program is installed
+
+Checks if `$1` is installed
+
+```bash
+#!/usr/bin/env bash
+command_exists() { type "$1" &> /dev/null; }
+
+if command_exists "$1"; then
+    echo "$1 installed"
+else
+    echo "$1 not installed"
+    exit 1
+fi
+```
+
+### Check which package manager is installed
+
+```bash
+#!/usr/bin/env bash
+command_exists() { type "$1" &> /dev/null; }
+
+if command_exists "apt-get"; then
+    PM="apt-get"
+elif command_exists "yum"; then
+    PM="yum"
+elif command_exists "pacman"; then
+    PM="pacman"
+elif command_exists "zypper"; then
+    PM="zypper"
+elif command_exists "emerge"; then
+    PM="emerge"
+elif command_exists "apk"; then
+    PM="apk"
+else
+    >&2 echo "Unsupported: unknown package manager"
+    exit 1
+fi
+
+echo "Package manager: ${PM}"
+```
+
+## Check if root
+
+This exits with and error message if it's run as root.
+
+```bash
+#!/bin/bash
+if [ $(whoami) != "root" ]; then
+    >&2 echo Rerun as non-root user
+    exit 1
+fi
+```
\ No newline at end of file
diff --git a/test.bash b/test.bash
new file mode 100755
index 0000000..46361b3
--- /dev/null
+++ b/test.bash
@@ -0,0 +1,10 @@
+#!/bin/bash
+command_exists() { type "$1" &> /dev/null; }
+
+if command_exists "apt-get"; then
+    PM="apt-get"
+elif command_exists "yum"; then
+    PM="yum"
+fi
+
+echo $PM
\ No newline at end of file