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bash-present's Introduction

bash-present

Bash script for giving CLI presentations, one line at a time, because who doesn't love a good command-line demo?

Overview

bash-present is a script for reading a text file containing shell commands, and executing them one-by-one.

Usage: $ present.sh <commands-file>

where <commands-file> is a plain-text file containing shell commmands to execute, one per line.

When invoked as described, this script will:

  • read a line from the supplied text file that represents a command
  • echo the line to stdout (with colors!)
  • wait for any input on the tty (aka waitd for you to hit Enter)
  • run the command
  • repeat until the file is exhausted

Example:

An example commands file (example.txt) would look like:

cowsay "Hello World\!"
date
cowsay $(date)

Running $ present.sh example.txt would yield:

$ cowsay "hello world!"

 ______________
< hello world! >
 --------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

$ date

Wed May  4 21:28:04 PDT 2016

$ cowsay $(date)

 _____________________________
< Wed May 4 21:28:05 PDT 2016 >
 -----------------------------
        \   ^__^
         \  (oo)\_______
            (__)\       )\/\
                ||----w |
                ||     ||

In the above example, the script echoes each command to stdout, before pausing to wait for the "Enter" key to be pressed. Then, the output of running that command is sent to stdout.

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