Babashka in Nextjournal 101 Demo

# question: Is there a human readible history of Babashka somewhere I can read?

# outdated version of Babashka

# wget https://github.com/borkdude/babashka/releases/download/v0.2.5/babashka-0.2.5-linux-amd64.zip

# outdated version of Babashka

# unzip -o babashka-0.2.5-linux-amd64 -d /usr/local/bin

# rm babashka-0.2.5-linux-amd64.zip

# import the newest version of Babashka

# wget https://github.com/babashka/babashka/releases/download/v0.4.0/babashka-0.4.0-linux-amd64.tar.gz

# question: What needs to be changed here to correctly unzip babashka?

# tar -xvzf -o babashka-0.4.0-linux-amd64 -d /usr/local/bin

tar --help

bb --version

# Not sure that I want to call this a skill... I'm removing the source zip... but I could be using Babashka at this point to do so!

# rm babashka-0.4.0-linux-amd64.tar.gz

# TODO: rewrite the above line in Babashka

# STUB: remove the babashka source zip by using Babashka

# question: What does the `-e` flag stand for? Execute, evaluate, expression... ?

# answer: The `-e` flag stands for "evaluate"

#         From the help menu "-e, --eval <expr> Evaluate an expression."

# description: "The babashka executable is called bb."

bb -e '(+ 1 2 3)'

# "I’m looking for replacements to mv, rm, and cp. I don’t want to do this with clojure.java.shell; in that case, I would just write the bash script. Can I do it in an OS-agnostic way in Babashka?"

# source: https://clojureverse.org/t/how-to-replace-every-day-bash-commands-with-babashka/6459/3?u=avidrucker

echo "babashka" > /tmp/a

bb '(io/copy (io/file "/tmp/a") (io/file "/tmp/b"))'

cat /tmp/b

# "What about bash mv? Is there a way without doing the copy and adding a delete?"

# source: https://clojureverse.org/t/how-to-replace-every-day-bash-commands-with-babashka/6459/5?u=avidrucker

bb '(.renameTo (io/file "/tmp/a") (io/file "/tmp/moved"))'

cat /tmp/moved

echo "(+ 5 6 7)" > /tmp/script.clj

# "the -f flag is optional when the argument is a filename"

# from the help menu: "-f, --file <path> Evaluate a file."

bb /tmp/script.clj

bb -f /tmp/script.clj # same as above line

# Commonly, scripts have shebangs so you can invoke them with their filename only:

# create and write to a file called script_b.clj

# script_b.clj

echo "#!/tmp bb

(+ 1 2 3)" > /tmp/script_b.clj

# confirm that the contents are as expected

cat /tmp/script_b.clj

# skill: run code from script with shebang by invoking filename only

bb /tmp/script_b.clj

# skill: print the help text

bb -h

# question: why does this result in error?

# bb repl

# note: careful! this will never terminate and the code cell is stuck!

# question: why does this result in error?

# answer: `doc` requires an argument

# question: Is there a valid argument for `doc` to take in this notebook as it stands currently?

# bb doc

# question: why does this result in error?

bb describe

# question: What is the (meaning/significance of the) following map?

# I am trying to make an EDN or Markdown cell here, but

# typing "```markdown " or "```edn " doesn't result in those types of cells, they simply just turn into another Babashka cell

# Question: What am I do doing incorrectly here?

# question: why does this result in error?

# answer: This results in error because running Clojure requires Java which doesn't exist in Nextjournal. 

# question: What is a minimum viable example of `bb clojure` used in context?

# bb clojure

bb --version