From a2d0d3f2167f8bdebd76e8ca69d1287ff0296af4 Mon Sep 17 00:00:00 2001
From: Antranig Vartanian <antranigv@freebsd.am>
Date: Tue, 14 Mar 2023 16:34:51 +0400
Subject: [PATCH] init

---
 Git.md          | 23 +++++++++++++++++++++++
 README.md       | 12 ++++++++++++
 Shell.md        | 17 +++++++++++++++++
 Unix.md         | 21 +++++++++++++++++++++
 answers/Unix.md | 18 ++++++++++++++++++
 hints/Shell.md  | 23 +++++++++++++++++++++++
 hints/Unix.md   | 19 +++++++++++++++++++
 7 files changed, 133 insertions(+)
 create mode 100644 Git.md
 create mode 100644 README.md
 create mode 100644 Shell.md
 create mode 100644 Unix.md
 create mode 100644 answers/Unix.md
 create mode 100644 hints/Shell.md
 create mode 100644 hints/Unix.md

diff --git a/Git.md b/Git.md
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+# Git
+
+Git exercises that will help you, always!
+
+> Use the git, Luke!
+>
+> -- Obi-Wan Kenobi, to Luke the Programmer
+
+## Getting Started
+
+1. Create a git repository, locally
+2. Add some files to it, maybe copy `empty` here? :)
+3. Commit `empty` to the source tree
+4. Make a remote repository on `git.belltower.it`
+5. Push all your local content to the remote!
+
+## Forking
+
+1. Fork bellhotel from [`antranig/bellhotel`](https://git.belltower.it/antranig/bellhotel)
+2. Make some modifications.
+3. Make a Pull Request!
+4. Wait for a response :)
+
diff --git a/README.md b/README.md
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+# Workouts!
+
+This repository contains exercises for anyone who wants to improve their knowledge around systems.
+
+This is a *live* repository, so there will be changes :)
+
+Here's the roadmap!
+
+1. [Unix.md](Unix.md)
+2. [Shell.md](Shell.md)
+3. [Git.md](Git.md)
+
diff --git a/Shell.md b/Shell.md
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+# Unix Shell
+
+These exercises are meant for people who want to improve their Shell Programming knowledge
+
+## Whitespace Renamer
+
+Write a program that gets a directory as an input via arguments and renames all files which have spaces in their name to `_`, so `Contract 4242 for BellTech.pdf` becomes `Contract_4242_for_BellTech.pdf`.
+
+## Expected Result
+
+```
+$ sh find_and_replace.sh
+Usage: find_and_replace.sh [-v] path
+$ sh find_and_replace.sh -v /path/to/directory
+Renaming 'My Document.txt' -> My_Document.txt
+```
+
diff --git a/Unix.md b/Unix.md
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+# Unix Workout
+
+The exercises in this document is meant to improve your Unix knowledge, such as daily commands and manual pages.
+
+## Single commands
+
+1. Find all text files (`.txt`) in your home directory using the `find` command
+2. Create an empty file named `empty`
+3. List the `empty` file with its permissions. 
+4. Who are you in this system? what is your username? what is your user ID? which groups do you belong to?
+5. What's the date and time right now?
+
+## Piping commands together
+
+1. Did you find all the `.txt` files? good! now put that output into `/tmp/txtfiles`
+2. Without using a text editor, put `hello there!` into `empty`
+3. Using your favorite editor, Vim, put more content into `empty`
+4. Print the content.
+5. Print the content and look if the string `lo` is in there!
+   1. Which line is it on?
+6. Get the date, again, and *pipe* it into `vim` :)
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diff --git a/answers/Unix.md b/answers/Unix.md
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+# Unix Answers
+
+## Single commands
+
+1. `find . -name '*.txt'`
+2. `touch empty`
+3. `ls -l empty`
+4. `id`
+5. `date`
+
+## Piping commands together
+
+1. `find . -name '*.txt' > /tmp/txtfiles`
+2. `echo 'hello there!' >> empty`
+3. `vim empty`
+4. `cat empty`
+5. `grep -n lo empty`
+6. `date | vim -`
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diff --git a/hints/Shell.md b/hints/Shell.md
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+# Unix Shell
+
+## Manuals you'd need
+
+### Testing
+
+If you want to test a string, value or a path, you can use `[`
+
+E.g.
+
+`[ 1 = 1 ]` will return 0, which means true
+
+### Getting Values from CLI
+
+Usually, `$#` means number of arguments, while `$1`, `$2` ... returns the argument.
+
+Special cases:
+
+1. `$@` returns all arguments
+2. `$0` returns the program itself
+
+> Pro tip: there are multiple ways to do this :)
+
diff --git a/hints/Unix.md b/hints/Unix.md
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+# Hints for Unix
+
+## Single commands
+
+1. `man find` should tell you everything you need
+2. `touch` is an interesting command :)
+3. checkout `man ls` for more info
+4. start with `man whoami`
+5. `time` and `date` are very weird. `time` doesn't display the current time, but rather a command's time. `date` on the other hand.
+
+## Piping commands together
+
+1. You may Google "Shell Redirection"
+2. Again, it's shell redirections!
+3. If lost, open `vimtutor`
+4. A cat is not just a cute pet.
+5. **G**et that **R**egular **E**xpression and **P**rint
+   1. Manual pages are friendly!
+6. You may Google "unix standard input"