A basic bash install executable script

install.sh

#!/bin/bash
cd /tmp
## Get the executable
wget https://path/to/bin

## Make home for command
mkdir ~/bin

## Copy executable to command directory
cp /tmp/[bin] ~/bin/[command]

## Allow run executable
chmod +x ~/bin/[command]

## Export command path to .bashrc to allow for command
echo "export PATH=$PATH:~/bin" >> ~/.bashrc

## Reload .bashrc
. ~/.bashrc

## Remove downloaded executable from /tmp
rm -f /tmp/[bin]