; author: CI/CD

% test, first

# trivial case -> "foo"
echo "foo"

# map with underscores -> "_foo_"
echo "<map1>"

# expand -> "foo"
echo "<expand1>"

# duplicated lines -> "foo\nlorem ipsum\nlorem ipsum\nbaz"
echo foo
echo lorem ipsum
echo lorem ipsum
echo baz

# empty line -> "foo\n\n\nbar"
echo "$(cat <<EOF
foo


bar
EOF
)"

# sed with replacement -> "172.17.0.2"
echo "8.8.8.8 via 172.17.0.1 dev eth0  src 172.17.0.2" | sed -E 's/.*src ([0-9.]+).*/\1/p' | head -n1

# 2nd column with default delimiter -> "rust is cool"
echo "<language> is cool"

# 2nd column with custom delimiter -> "clojure is cool"
echo "<language2> is cool"

# multiple words -> "lorem foo bar ipsum"
echo "lorem <multiword> ipsum"

# variable dependency, full -> "2 12 a 2"
echo "<x> <x2> <y> <x>"

; # variable dependency, we can ignore intermediate values -> "foo 12"
; printf "foo "; : <x>; echo "<x2>"

# nested unused value -> "path: /my/pictures"
echo "path: <pictures_folder>"

# multiline command: no backslash -> "foo\nbar"
echo "foo"
echo "bar"

# multiline command: with backslash -> "lorem ipsum\nno match"
echo 'lorem ipsum'
echo "foo" \
    | grep -q "bar" \
    && echo "match" \
    || echo "no match"

# multiline variable -> "foo bar"
echo "<multilinevar>"

# helper -> "inside helper: 42"
myhelperfn 42

$ x: echo '2'
$ x2: echo "$((x+10))"
$ y: echo 'a'
$ language: echo '0  rust      rust-lang.org' --- --column 2
$ language2: echo '1;clojure;clojure.org' --- --column 2 --delimiter ';'
$ multiword: echo 'foo bar'
$ pictures_folder: echo "/my/pictures"
$ map1: echo "foo" --- --map 'echo _$(cat)_'
$ multilinevar: echo "xoo yar" \
   | tr 'x' 'f' \
   | tr 'y' 'b'
$ expand1: echo "foo" --- --expand


# this should be displayed -> "hi"
echo hi


% test, second

@ test, first
@ test, third

# nested used value -> "path: /my/pictures/wallpapers"
echo "path: <wallpaper_folder>"

# same command as before -> "12"
: <x>; echo "<x2>"

# the order isn't relevant -> "br"
echo "<country>"

$ wallpaper_folder: echo "<pictures_folder>/wallpapers"


% test, third

; this cheathsheet doesn't have any commands
$ country: echo "br"